Coloring resin composition, film, color filter, solid-state imaging element, and image display device

ABSTRACT

Provided are a coloring resin composition including a resin, a coloring material, and an organic solvent, in which the resin includes at least one repeating unit selected from the group consisting of repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5), a proportion of a total amount of the repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5) with respect to a total molar amount of all repeating units included in the resin exceeds 60 mol %, and a content of the coloring material is 30 mass % or more with respect to a total solid content of the composition; a film; a color filter; a solid-state imaging element; and an image display device.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a Continuation of PCT International Application No. PCT/JP2020/028781 filed on Jul. 28, 2020, which claims priority under 35 U.S.C § 119(a) to Japanese Patent Application No. 2019-139390 filed on Jul. 30, 2019. Each of the above application(s) is hereby expressly incorporated by reference, in its entirety, into the present application.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to a coloring resin composition, a film, a color filter, a solid-state imaging element, and an image display device.

2. Description of the Related Art

In recent years, as a digital camera, a mobile phone with a camera, and the like have been further spreading, there has been a greatly increasing demand for a solid-state imaging element such as a charge coupled device (CCD) image sensor. A film including a pigment, such as a color filter, has been used for the solid-state imaging element. The film including a pigment, such as a color filter, is manufactured by using a coloring resin composition and the like, which includes a coloring material, a resin, and a solvent.

For example, JP2019-031627A discloses an alkali-soluble resin having a specific constitutional unit, which is characterized by including each constitutional unit in a specific content, a photosensitive resin composition for a color filter, which includes the resin, and the like.

JP1995-311461A (JP-H07-311461A) discloses a water-soluble coloring photosensitive resin composition which includes a water-soluble resin having a polymer formed of at least one monomer selected from a group of an acrylamide-based monomer consisting of α-substituted acrylamide, N-mono-substituted acrylamide, N,N-di-substituted acrylamide, or N-mono-substituted methacrylamide, a crosslinking agent having a water-soluble azide compound, and a colorant.

SUMMARY OF THE INVENTION

In recent years, in the manufacturing process of a solid-state imaging element, it has been also studied to form a film such as a color filter using a coloring resin composition including a coloring material, a resin, and a solvent, and then subject the film to a step requiring a heating treatment at a high temperature (for example, 300° C. or higher).

Therefore, an object of the present invention is to provide a novel coloring resin composition which can expand a process window of the process after manufacturing the film, a film, a color filter, a solid-state imaging element, and an image display device.

Examples of typical embodiments of the present invention are shown below.

<1> A coloring resin composition comprising:

a resin;

a coloring material; and

an organic solvent,

in which the resin includes at least one repeating unit selected from the group consisting of repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5),

a proportion of a total amount of the repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5) with respect to

a total molar amount of all repeating units included in the resin exceeds 60 mol %, and a content of the coloring material is 30 mass % or more with respect to a total solid content of the composition,

in Formula (1-1), R¹¹, R¹², and R¹³ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, and Ar represents an aromatic group having 5 to 30 ring members,

in Formula (1-2), R²¹, R²², and R²³ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, R²⁴ and R²⁵ each independently represent a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms, and R²⁴ and R²⁵ may be bonded to each other to form a ring structure,

in Formula (1-3), R³¹, R³², and R³³ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, R³⁴ and R³⁵ each independently represent a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms, and R³⁴ and R³⁵ may be bonded to each other to form a ring structure,

in Formula (1-4), R⁴¹ and R⁴² each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, and R⁴³ represents a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms,

in Formula (1-5), R⁵¹ to R⁵⁴ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, and R⁵⁵ represents a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms.

<2> The coloring resin composition according to <1>,

in which a content of a repeating unit derived from a (meth)acrylic acid or (meth)acrylic acid ester compound in the resin is 0 to 20 mol % with respect to the total molar amount of all repeating units included in the resin.

<3> The coloring resin composition according to <1> or <2,>

in which the resin has at least one group selected from the group consisting of a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, and an amino group.

<4> The coloring resin composition according to any one of <1> to <3>,

in which an acid value of the resin is 20 to 150 mgKOH/g.

<5> The coloring resin composition according to any one of <1> to <4>,

in which the resin has an ethylenically unsaturated bond.

<6> The coloring resin composition according to any one of <1> to <5>,

in which a C═C value of the resin is 0.1 to 3 mmol/g.

<7> The coloring resin composition according to any one of <1> to <6>,

in which the resin is a graft polymer or a star polymer.

<8> The coloring resin composition according to any one of <1> to <7>,

in which the resin has a molecular weight of 1,000 to 10,000 and has a molecular chain having no acid group or basic group.

<9> The coloring resin composition according to <8>,

in which the molecular chain includes at least one selected from the group consisting of a repeating unit derived from a (meth)acrylic acid ester compound, a repeating unit derived from a (meth)acrylamide compound, a repeating unit derived from an aromatic vinyl compound, and a polyester structure.

<10> The coloring resin composition according to any one of <1> to <9>,

in which, as the resin, the following resin 1 and resin 2 are included,

resin 1: a resin which is the resin and includes a group having an acid group and an ethylenically unsaturated bond,

resin 2: a resin which is the resin, has at least one group selected from the group consisting of a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, and an amino group, and has a molecular chain having a molecular weight of 1,000 to 10,000 and having no acid group.

<11> The coloring resin composition according to any one of <1> to <10>,

in which the coloring material includes at least one coloring material selected from the group consisting of a chromatic coloring material and a near-infrared absorbing coloring material.

<12> The coloring resin composition according to any one of <1> to <11>,

in which the coloring material includes a chromatic coloring material and a near-infrared absorbing coloring material.

<13> The coloring resin composition according to any one of <1> to <12>,

in which the coloring material includes a black coloring material.

<14> The coloring resin composition according to any one of <1> to <13>,

in which the coloring material includes at least one coloring material selected from the group consisting of a red coloring material, a yellow coloring material, a blue coloring material, and a violet coloring material.

<15> The coloring resin composition according to any one of <1> to <14>, further comprising:

a photopolymerization initiator.

<16> The coloring resin composition according to <15>,

in which the photopolymerization initiator is an oxime compound.

<17> The coloring resin composition according to any one of <1> to <16>,

in which the coloring resin composition is used for forming a pattern in a photolithography method.

<18> The coloring resin composition according to any one of <1> to <17>,

in which the coloring resin composition is used for a solid-state imaging element.

<19> A film formed of the coloring resin composition according to any one of <1> to <18>.

<20> A color filter comprising:

the film according to <19>.

<21> A solid-state imaging element comprising:

the film according to <19>.

<22> An image display device comprising:

the film according to <19>.

According to the present invention, a novel coloring resin composition which can expand a process window of the process after manufacturing the film, a film, a color filter, a solid-state imaging element, and an image display device are provided.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, main embodiments of the present invention will be described. However, the present invention is not limited to the specified embodiments.

In the present specification, “to” is used to refer to a meaning including numerical values denoted before and after “to” as a lower limit value and an upper limit value.

In the present specification, unless specified as a substituted group or as an unsubstituted group, a group (atomic group) denotes not only a group (atomic group) having no substituent but also a group (atomic group) having a substituent. For example, an “alkyl group” includes not only an alkyl group having no substituent (unsubstituted alkyl group), but also an alkyl group having a substituent (substituted alkyl group).

In the present specification, unless specified otherwise, “exposure” denotes not only exposure using light but also drawing using a corpuscular beam such as an electron beam or an ion beam. In addition, examples of light used for the exposure include actinic rays or radiation such as a bright line spectrum of a mercury lamp, far ultraviolet rays typified by an excimer laser, extreme ultraviolet rays (EUV light), X-rays, or electron beams.

In the present specification, a (meth)allyl group represents either or both of allyl and methallyl, “(meth)acrylate” represents either or both of acrylate and methacrylate, “(meth)acryl” represents either or both of acryl and methacryl, and “(meth)acryloyl” represents either or both of acryloyl and methacryloyl.

In the present specification, a weight-average molecular weight and a number-average molecular weight are values in terms of polystyrene through measurement by a gel permeation chromatography (GPC) method.

In the present specification, near-infrared rays denote light having a wavelength in a range of 700 to 2500 nm.

In the present specification, a total solid content denotes the total mass of all the components of the composition excluding a solvent.

In the present specification, the term “step” refers to not only an individual step but also a step which is not clearly distinguishable from another step as long as an effect expected from the step can be achieved.

In addition, in the present specification, a combination of preferred aspects is a more preferred aspect.

(Coloring Resin Composition)

A coloring resin composition according to an embodiment of the present invention includes a resin, a coloring material, and an organic solvent, in which the resin includes at least one repeating unit selected from the group consisting of repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5), a proportion of a total amount of the repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5) with respect to a total molar amount of all repeating units included in the resin exceeds 60 mol %, and a content of the coloring material is 30 mass % or more with respect to a total solid content of the composition.

In the present invention, a resin which includes at least one repeating unit selected from the group consisting of repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5) and in which a proportion of a total amount of the repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5) with respect to a total molar amount of all repeating units included in the resin exceeds 60 mol % is also referred to as a “specific resin” hereinafter.

In Formula (1-1), R¹¹, R¹², and R¹³ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, and Ar represents an aromatic group having 5 to 30 ring members,

in Formula (1-2), R²¹, R²², and R²³ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, R²⁴ and R²⁵ each independently represent a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms, and R²⁴ and R²⁵ may be bonded to each other to form a ring structure,

in Formula (1-3), R³¹, R³², and R³³ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, R³⁴ and R³⁵ each independently represent a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms, and R³⁴ and R³⁵ may be bonded to each other to form a ring structure,

in Formula (1-4), R⁴¹ and R⁴² each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, and R⁴³ represents a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms,

in Formula (1-5), R⁵¹ to R⁵⁴ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, and R⁵⁵ represents a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms.

The coloring resin composition according to the embodiment of the present invention contains a high concentration (30 mass % or more) of a coloring material, a resin, and an organic solvent.

As a result of intensive studies, the present inventors have found that, in a coloring resin composition including such a high concentration coloring material, a resin, and an organic solvent, in a case where an acrylic resin used in the related art is used as the resin, a process window of the process after manufacturing a film is narrow in a case of being subjected to a step of a heating treatment requiring a high temperature (for example, 300° C. or higher), such as a film contraction ratio of a composition film to be obtained is increased, and cracks occur in other films (for example, an inorganic film) formed on the composition film to be obtained.

It is presumed that this is because the acrylic resin is decomposed by high temperature.

Therefore, as a result of intensive studies, the present inventors have found that, by using, as the resin, a resin in which the proportion of the total amount of the repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5) exceeds 60 mol %, the occurrence of cracks and the like described above are suppressed, and the process window of the process after manufacturing the film can be expanded.

Although the mechanism by which the above-described effects are obtained is unclear, it is considered that, in the film obtained by the coloring resin composition including the resin in which the content of the above-described specific repeating unit exceeds 60 mol %, the decomposition of the resin is suppressed even in the step of a heating treatment requiring the high temperature. Therefore, such as contraction due to heating of the above-described film is suppressed, cracks are less likely to occur, it is presumed that it is possible to expand an applicable range of the heating temperature in steps after manufacturing the film using the coloring resin composition to a higher temperature (for example, 300° C. or higher), and it is possible to expand the process window of the process after manufacturing the film.

In a case where a film having a thickness of 0.60 μm is formed by heating the coloring resin composition according to the embodiment of the present invention at 200° C. for 30 minutes, a thickness of the film after performing a heating treatment of the film at 300° C. for 5 hours in a nitrogen atmosphere is preferably 70% or more of a thickness of the film before the heating treatment, more preferably 80% or more thereof, and still more preferably 90% or more.

In addition, a thickness of the film after performing a heating treatment of the film at 350° C. for 5 hours in a nitrogen atmosphere is preferably 70% or more of a thickness of the film before the heating treatment, more preferably 80% or more thereof, and still more preferably 90% or more.

In addition, a thickness of the film after performing a heating treatment of the film at 400° C. for 5 hours in a nitrogen atmosphere is preferably 70% or more of a thickness of the film before the heating treatment, more preferably 80% or more thereof, and still more preferably 90% or more.

The above-described physical properties can be achieved by a method such as adjusting the type and content of the specific resin to be used or other resins.

In addition, in a case where a film having a thickness of 0.60 μm is formed by heating the coloring resin composition according to the embodiment of the present invention at 200° C. for 30 minutes, a rate of change ΔA in absorbance of the film after the heating treatment at 300° C. for 5 hours in a nitrogen atmosphere, which is represented by Expression (1), is preferably 50% or less, more preferably 45% or less, still more preferably 40% or less, and particularly preferably 35% or less.

$\begin{matrix} {{\Delta\; A\mspace{11mu}(\%)} = {{100 - {\left( {A\;{2/A}\; 1} \right) \times 100}}}} & (1) \end{matrix}$

ΔA is the rate of change in the absorbance of the film after the heating treatment;

A1 is a maximum value of an absorbance of the film before the heating treatment in a wavelength range of 400 to 1100 nm; and

A2 is the absorbance of the film after the heating treatment, and is the absorbance at a wavelength showing the maximum value of the absorbance of the film before the heating treatment in a wavelength range of 400 to 1100 nm.

The above-described physical properties can be achieved by a method such as adjusting the type and content of the specific resin to be used or other resins.

In addition, in a case where a film having a thickness of 0.60 μm is formed by heating the coloring resin composition according to the embodiment of the present invention at 200° C. for 30 minutes, an absolute value of a difference between a wavelength λ1 showing the maximum value of the absorbance of the film in a wavelength range of 400 to 1100 nm and a wavelength λ2 showing the maximum value of the absorbance of the film after the heating treatment at 300° C. for 5 hours in a nitrogen atmosphere is preferably 50 nm or less, more preferably 45 nm or less, and still more preferably 40 nm or less.

The above-described physical properties can be achieved by a method such as adjusting the type and content of the specific resin to be used or other resins.

In addition, in a case where a film having a thickness of 0.60 μm is formed by heating the coloring resin composition according to the embodiment of the present invention at 200° C. for 30 minutes, a maximum value of the rate of change ΔA_(λ) in an absorbance of the film after the heating treatment at 300° C. for 5 hours in a nitrogen atmosphere in a wavelength range of 400 to 1100 nm is preferably 30% or less, more preferably 27% or less, and still more preferably 25% or less. The rate of change in the absorbance is a value calculated from Expression (2).

$\begin{matrix} {{\Delta A_{\lambda}} = {{100 - {\left( {A\;{2_{\lambda}/A}1_{\lambda}} \right) \times 100}}}} & (2) \end{matrix}$

ΔA_(λ) is the rate of change in the absorbance of the film after the heating treatment at a wavelength λ;

A1_(λ) is the absorbance of the film before the heating treatment at the wavelength λ; and

A2_(λ) is the absorbance of the film after the heating treatment at the wavelength λ.

The above-described physical properties can be achieved by a method such as adjusting the type and content of the specific resin to be used or other resins.

In addition, in a case where the coloring resin composition according to the embodiment of the present invention is applied to a glass substrate and heated at 100° C. for 120 seconds to form a film having a film thickness of 0.6 μm, it is preferable that the film has a transmittance of 80% or more at a wavelength of 400 nm. In addition, it is preferable that the above-described film has a transmittance of 90% or more at a wavelength of 450 nm. More preferably, the film has a transmittance of 90% or more at a wavelength of 400 nm and a transmittance of 95% or more at a wavelength of 450 nm.

The coloring resin composition according to the embodiment of the present invention can be used for a color filter, a near-infrared transmitting filter, a near-infrared cut filter, a black matrix, a light shielding film, and the like.

Examples of the color filter include a filter having a colored pixel which transmits light having a specific wavelength, and a filter having at least one colored pixel selected from a red pixel, a blue pixel, a green pixel, a yellow pixel, a cyan pixel, and a magenta pixel is preferable. The color filter can be formed using a coloring resin composition including a chromatic coloring material.

Examples of the near-infrared cut filter include a filter having a maximal absorption wavelength in a wavelength range of 700 to 1800 nm. As the near-infrared cut filter, a filter having a maximal absorption wavelength in a wavelength range of 700 to 1300 nm is preferable, and a filter having a maximal absorption wavelength in a wavelength range of 700 to 1100 nm is more preferable. In addition, in the near-infrared cut filter, a transmittance of in the entire wavelength range of 400 to 650 nm is preferably 70% or more, more preferably 80% or more, and still more preferably 90% or more. In addition, the transmittance at at least one point in a wavelength range of 700 to 1800 nm is preferably 20% or less. In addition, in the near-infrared cut filter, absorbance A_(max)/absorbance A₅₅₀, which is a ratio of an absorbance A_(max) at a maximal absorption wavelength to an absorbance A₅₅₀ at a wavelength of 550 nm, is preferably 20 to 500, more preferably 50 to 500, still more preferably 70 to 450, and particularly preferably 100 to 400. The near-infrared cut filter can be formed using a coloring resin composition including a near-infrared absorbing coloring material.

The near-infrared transmitting filter is a filter which transmits at least a part of near-infrared rays. The near-infrared transmitting filter may be a filter (transparent film) which transmits both visible light and near-infrared ray, or may be a filter which shields at least a part of visible light and transmits at least a part of near-infrared rays. Preferred examples of the near-infrared transmitting filter include filters satisfying spectral characteristics in which the maximum value of a transmittance in a wavelength range of 400 to 640 nm is 20% or less (preferably 15% or less and more preferably 10% or less) and the minimum value of a transmittance in a wavelength range of 1100 to 1300 nm is 70% or more (preferably 75% or more and more preferably 80% or more). The near-infrared transmitting filter is preferably a filter which satisfies any one of the following spectral characteristics (1) to (4).

(1): filter in which the maximum value of a transmittance in a wavelength range of 400 to 640 nm is 20% or less (preferably 15% or less and more preferably 10% or less) and the minimum value of a transmittance in a wavelength range of 800 to 1300 nm is 70% or more (preferably 75% or more and more preferably 80% or more).

(2): filter in which the maximum value of a transmittance in a wavelength range of 400 to 750 nm is 20% or less (preferably 15% or less and more preferably 10% or less) and the minimum value of a transmittance in a wavelength range of 900 to 1300 nm is 70% or more (preferably 75% or more and more preferably 80% or more).

(3): filter in which the maximum value of a transmittance in a wavelength range of 400 to 830 nm is 20% or less (preferably 15% or less and more preferably 10% or less) and the minimum value of a transmittance in a wavelength range of 1000 to 1300 nm is 70% or more (preferably 75% or more and more preferably 80% or more).

(4): filter in which the maximum value of a transmittance in a wavelength range of 400 to 950 nm is 20% or less (preferably 15% or less and more preferably 10% or less) and the minimum value of a transmittance in a wavelength range of 1100 to 1300 nm is 70% or more (preferably 75% or more and more preferably 80% or more).

The coloring resin composition according to the embodiment of the present invention can be preferably used as a coloring resin composition for a color filter. Specifically, the coloring resin composition according to the embodiment of the present invention can be preferably used as a coloring resin composition for forming a pixel of a color filter, and can be more preferably used as a coloring resin composition for forming a red or blue pixel of a color filter. In addition, the coloring resin composition according to the embodiment of the present invention can be preferably used as a coloring resin composition for forming a pixel of a color filter used in a solid-state imaging element.

In a case where the coloring resin composition according to the embodiment of the present invention is applied to a glass substrate and heated at 100° C. for 120 seconds to form a film having a film thickness of 0.6 μm, it is preferable that a maximum value of a transmittance of the film at a wavelength of 400 to 1100 nm is 70% or more (preferably 75% or more, more preferably 80% or more, and still more preferably 85% or more), and a minimum value thereof is 30% or less (preferably 25% or less, more preferably 20% or less, and still more preferably 15% or less). A coloring resin composition capable of forming a film satisfying the above-described spectral characteristics can be particularly preferably used as a coloring resin composition for forming a color filter, a near-infrared transmitting filter, or a near-infrared cut filter.

In addition, the coloring resin composition according to the embodiment of the present invention is also preferably a coloring resin composition used for forming a pattern in a photolithography method. According to this aspect, finely sized pixels can be easily formed. Therefore, the coloring resin composition according to the embodiment of the present invention can be particularly preferably used as a coloring resin composition for forming a pixel of a color filter used in a solid-state imaging element. For example, a coloring resin composition containing a component having a polymerizable group (for example, a resin or polymerizable compound having a polymerizable group) and a photopolymerization initiator can be preferably used as a coloring resin composition used for forming a pattern in a photolithography method. The coloring resin composition for forming a pattern in the photolithography method preferably further contains an alkali-soluble resin (for example, a resin 1 described later or an alkali developable resin described later).

Hereinafter, the respective components used in the coloring resin composition according to the embodiment of the present invention will be described.

<Coloring Material>

The coloring resin composition according to the embodiment of the present invention contains a coloring material. Examples of the coloring material include a white coloring material, a black coloring material, a chromatic coloring material, and a near-infrared absorbing coloring material. In the present invention, the white coloring material includes not only a pure white coloring material but also a bright gray (for example, grayish-white, light gray, and the like) coloring material close to white.

In addition, it is preferable that the coloring material includes at least one coloring material selected from the group consisting of a chromatic coloring material, a black coloring material, and a near-infrared absorbing coloring material, it is more preferable to include at least one coloring material selected from the group consisting of a chromatic coloring material and a near-infrared absorbing coloring material, it is still more preferable to include a chromatic coloring material, and it is even more preferable to include at least one coloring material selected from the group consisting of a red coloring material, a yellow coloring material, a blue coloring material, and a violet coloring material.

In addition, the coloring material preferably includes a black coloring material.

In addition, the coloring material preferably includes a chromatic coloring material and a near-infrared absorbing coloring material, and more preferably includes two or more kinds of chromatic coloring materials and a near-infrared absorbing coloring material.

In addition, the coloring material also preferably includes a black coloring material and a near-infrared absorbing coloring material.

According to these aspects, the coloring resin composition according to the embodiment of the present invention can be preferably used as a coloring resin composition for forming a near-infrared transmitting filter.

For the combination of these coloring materials, JP2013-77009A, JP2014-130338A, WO2015/166779A, and the like can be referred to.

Examples of the coloring material include a dye and a pigment, and from the viewpoint of heat resistance, a pigment is preferable. In addition, the pigment may be an inorganic pigment or an organic pigment, but from the viewpoint of many color variations, ease of dispersion, safety, and the like, an organic pigment is preferable. In addition, it is preferable that the pigment includes at least one selected from a chromatic pigment or a near-infrared ray absorbing pigment, and it is more preferable to include a chromatic pigment.

In addition, it is preferable that the pigment includes at least one selected from a phthalocyanine pigment, a dioxazine pigment, a quinacridone pigment, an anthraquinone pigment, a perylene pigment, an azo pigment, a diketopyrrolopyrrole pigment, a pyrrolopyrrole pigment, an isoindoline pigment, or a quinophthalone pigment, it is more preferable to include at least one selected from a phthalocyanine pigment, a diketopyrrolopyrrole pigment, or a pyrrolopyrrole pigment, and it is still more preferable to include a phthalocyanine pigment or a diketopyrrolopyrrole pigment. In addition, from the reason that it is easy to form a film in which spectral characteristics do not easily fluctuate even after heating to a high temperature (for example, 300° C. or higher), the phthalocyanine pigment is preferably a phthalocyanine pigment having no central metal or a phthalocyanine pigment having copper or zinc as a central metal.

In addition, from the reason that it is easy to form a film in which spectral characteristics do not easily fluctuate even after heating to a high temperature (for example, 300° C. or higher), it is preferable that the coloring material included in the coloring resin composition includes at least one selected from a red pigment, a yellow pigment, a blue pigment, or an infrared ray absorbing pigment, it is more preferable to include at least one selected from a red pigment or a blue pigment, and it is still more preferable to include a blue pigment.

The coloring material included in the coloring resin composition preferably includes a pigment A exhibiting the following requirement 1. By using a coloring material having such characteristics, it is possible to form a film in which spectral characteristics do not easily fluctuate even after heating to a high temperature (for example, 300° C. or higher). The proportion of the pigment A in the total amount of the pigment included in the coloring resin composition is preferably 20 to 100 mass %, more preferably 30 to 100 mass %, and still more preferably 40 to 100 mass %.

Requirement 1)

In a case where a film having a thickness of 0.60 μm is formed by heating, at 200° C. for 30 minutes, a composition which includes 6 mass % of the pigment A, 10 mass % of a resin B-5, and 84 mass % of propylene glycol monomethyl ether acetate, in a case where the film is subjected to a heating treatment at 300° C. for 5 hours in a nitrogen atmosphere, the rate of change ΔA10 in an absorbance of the film after the heating treatment, which is represented by Expression (10), is 50% or less;

$\begin{matrix} {{\Delta\; A\; 10} = {{100 - {\left( {A\;{12/A}\; 11} \right) \times 100}}}} & (10) \end{matrix}$

ΔA10 is the rate of change in the absorbance of the film after the heating treatment;

A11 is the maximum value of the absorbance of the film before the heating treatment in a wavelength range of 400 to 1100 nm;

A12 is the absorbance of the film after the heating treatment, and is the absorbance at the wavelength showing the maximum value of the film before the heating treatment in a wavelength range of 400 to 1100 nm; and

The resin B-5 is a resin having the following structure, in which a numerical value added to a main chain represents a molar ratio, the weight-average molecular weight is 11000, and the acid value is 32 mgKOH/g.

Examples of the pigment A satisfying the above-described requirement 1 include C. I. Pigment Red 254, C. I. Pigment Red 264, Pigment Red 272, Pigment Red 122, Pigment Red 177, C. I. Pigment Blue 15:3, C. I. Pigment Blue 15:4, C. I. Pigment Blue 15:6, and C. I. Pigment Blue 16.

The average primary particle diameter of the pigment is preferably 1 to 200 nm. The lower limit is preferably 5 nm or more and more preferably 10 nm or more. The upper limit is preferably 180 nm or less, more preferably 150 nm or less, and still more preferably 100 nm or less. In a case where the average primary particle diameter of the pigment is within the above-described range, dispersion stability of the pigment in the coloring resin composition is good. In the present invention, the primary particle diameter of the pigment can be determined from an image obtained by observing primary particles of the pigment using a transmission electron microscope. Specifically, a projected area of the primary particles of the pigment is determined, and the corresponding equivalent circle diameter is calculated as the primary particle diameter of the pigment. In addition, the average primary particle diameter in the present invention is the arithmetic average value of the primary particle diameters with respect to 400 primary particles of the pigment. In addition, the primary particle of the pigment refers to a particle which is independent without aggregation.

[Chromatic Coloring Material]

Examples of the chromatic coloring material include a coloring material having a maximal absorption wavelength in a wavelength range of 400 to 700 nm. Examples thereof include a yellow coloring material, an orange coloring material, a red coloring material, a green coloring material, a violet coloring material, and a blue coloring material. From the viewpoint of heat resistance, the chromatic coloring material is preferably a pigment (chromatic pigment), more preferably a red pigment, a yellow pigment, or a blue pigment, and still more preferably a red pigment or a blue pigment. Specific examples of the chromatic pigment include the following.

Color Index (C. I.) Pigment Yellow 1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 24, 31, 32, 34, 35, 35:1, 36, 36:1, 37, 37:1, 40, 42, 43, 53, 55, 60, 61, 62, 63, 65, 73, 74, 77, 81, 83, 86, 93, 94, 95, 97, 98, 100, 101, 104, 106, 108, 109, 110, 113, 114, 115, 116, 117, 118, 119, 120, 123, 125, 126, 127, 128, 129, 137, 138, 139, 147, 148, 150, 151, 152, 153, 154, 155, 156, 161, 162, 164, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 179, 180, 181, 182, 185, 187, 188, 193, 194, 199, 213, 214, 215, 228, 231, 232 (methine-based), 233 (quinoline-based), 234 (aminoketone-based), 235 (aminoketone-based), 236 (aminoketone-based), and the like (all of which are yellow pigments);

C. I. Pigment Orange 2, 5, 13, 16, 17:1, 31, 34, 36, 38, 43, 46, 48, 49, 51, 52, 55, 59, 60, 61, 62, 64, 71, and 73 (all of which are orange pigments);

C. I. Pigment Red 1, 2, 3, 4, 5, 6, 7, 9, 10, 14, 17, 22, 23, 31, 38, 41, 48:1, 48:2, 48:3, 48:4, 49, 49:1, 49:2, 52:1, 52:2, 53:1, 57:1, 60:1, 63:1, 66, 67, 81:1, 81:2, 81:3, 83, 88, 90, 105, 112, 119, 122, 123, 144, 146, 149, 150, 155, 166, 168, 169, 170, 171, 172, 175, 176, 177, 178, 179, 184, 185, 187, 188, 190, 200, 202, 206, 207, 208, 209, 210, 216, 220, 224, 226, 242, 246, 254, 255, 264, 270, 272, 279, 294 (xanthene-based, Organo Ultramarine, Bluish Red), 295 (monoazo-based), 296 (diazo-based), 297 (aminoketone-based), and the like (all of which are red pigments);

C. I. Pigment Green 7, 10, 36, 37, 58, 59, 62, 63, 64 (phthalocyanine-based), 65 (phthalocyanine-based), 66 (phthalocyanine-based), and the like (all of which are green pigments);

C. I. Pigment Violet 1, 19, 23, 27, 32, 37, 42, 60 (triarylmethane-based), 61 (xanthene-based), and the like (all of which are violet pigments); and

C. I. Pigment Blue 1, 2, 15, 15:1, 15:2, 15:3, 15:4, 15:6, 16, 22, 29, 60, 64, 66, 79, 80, 87 (monoazo-based), 88 (methine-based), and the like (all of which are blue pigments).

Among these chromatic pigments, as the red pigment, from the reason that it is easy to form a film in which spectral characteristics do not easily fluctuate even after heating to a high temperature (for example, 300° C. or higher), C. I. Pigment Red 254, C. I. Pigment Red 264, Pigment Red 272, Pigment Red 122, or Pigment Red 177 is preferable. In addition, as the blue pigment, C. I. Pigment Blue 15:3, C. I. Pigment Blue 15:4, C. I. Pigment Blue 15:6, or C. I. Pigment Blue 16 is preferable.

In addition, as the green coloring material, a halogenated zinc phthalocyanine pigment having an average number of halogen atoms in one molecule of 10 to 14, an average number of bromine atoms in one molecule of 8 to 12, and an average number of chlorine atoms in one molecule of 2 to 5 can also be used. Specific examples thereof include the compounds described in WO2015/118720A. In addition, as the green pigment, a compound described in CN2010-6909027A, a phthalocyanine compound described in WO2012/102395A, which has phosphoric acid ester as a ligand, a phthalocyanine compound described in JP2019-008014A, a phthalocyanine compound described in JP2018-180023A, a compound described in JP2019-038958A, and the like can also be used.

In addition, as the blue coloring material, an aluminum phthalocyanine compound having a phosphorus atom can also be used. Specific examples thereof include the compounds described in paragraph Nos. 0022 to 0030 of JP2012-247591A and paragraph No. 0047 of JP2011-157478A.

In addition, as the yellow coloring material, compounds described in JP2017-201003A, compounds described in JP2017-197719A, compounds described in paragraph Nos. 0011 to 0062 and 0137 to 0276 of JP2017-171912A, compounds described in paragraph Nos. 0010 to 0062 and 0138 to 0295 of JP2017-171913A, compounds described in paragraph Nos. 0011 to 0062 and 0139 to 0190 of JP2017-171914A, compounds described in paragraph Nos. 0010 to 0065 and 0142 to 0222 of JP2017-171915A, quinophthalone compounds described in paragraph Nos. 0011 to 0034 of JP2013-054339A, quinophthalone compounds described in paragraph Nos. 0013 to 0058 of JP2014-026228A, isoindoline compounds described JP2018-062644A, quinophthalone compounds described in JP2018-203798A, quinophthalone compounds described in JP2018-062578A, quinophthalone compounds described in JP6432077B, quinophthalone compounds described in JP6432076B, quinophthalone compounds described in JP2018-155881A, quinophthalone compounds described in JP2018-111757A, quinophthalone compounds described in JP2018-040835A, quinophthalone compounds described in JP2017-197640A, quinophthalone compounds described in JP2016-145282A, quinophthalone compounds described in JP2014-085565A, quinophthalone compounds described in JP2014-021139A, quinophthalone compounds described in JP2013-209614A, quinophthalone compounds described in JP2013-209435A, quinophthalone compounds described in JP2013-181015A, quinophthalone compounds described in JP2013-061622A, quinophthalone compounds described in JP2013-054339A, quinophthalone compounds described in JP2013-032486A, quinophthalone compounds described in JP2012-226110A, quinophthalone compounds described in JP2008-074987A, quinophthalone compounds described in JP2008-081565A, quinophthalone compounds described in JP2008-074986A, quinophthalone compounds described in JP2008-074985A, quinophthalone compounds described in JP2008-050420A, quinophthalone compounds described in JP2008-031281A, quinophthalone compounds described in JP1973-032765A (JP-S48-032765A), quinophthalone compounds described in JP2019-008014A, a compound represented by Formula (QP1), and a compound represented by Formula (QP2) can also be used.

In Formula (QP1), X¹ to X¹⁶ each independently represent a hydrogen atom or a halogen atom, and Z¹ represents an alkylene group having 1 to 3 carbon atoms. Specific examples of the compound represented by Formula (QP1) include compounds described in paragraph No. 0016 of JP6443711B.

In Formula (QP2), Y¹ to Y³ each independently represent a halogen atom. n and m represent an integer of 0 to 6, and p represents an integer of 0 to 5. (n+m) is 1 or more. Specific examples of the compound represented by Formula (QP2) include compounds described in paragraph Nos. 0047 and 0048 of JP6432077B.

As the red coloring material, diketopyrrolopyrrole compounds described in JP2017-201384A, in which the structure has at least one substituted bromine atom, diketopyrrolopyrrole compounds described in paragraph Nos. 0016 to 0022 of JP6248838B, diketopyrrolopyrrole compounds described in WO2012/102399A, diketopyrrolopyrrole compounds described in WO2012/117965A, naphtholazo compounds described in JP2012-229344, compounds described in JP6516119B, compounds described in JP6525101B, and the like can also be used. In addition, as the red coloring material, a compound having a structure that an aromatic ring group in which a group bonded with an oxygen atom, a sulfur atom, or a nitrogen atom is introduced to an aromatic ring is bonded to a diketopyrrolopyrrole skeleton can be used. As the compound, a compound represented by Formula (DPP1) is preferable, and a compound represented by Formula (DPP2) is more preferable.

In the formulae, R¹¹ and R¹³ each independently represent a substituent, R¹² and R¹⁴ each independently represent a hydrogen atom, an alkyl group, an aryl group, or a heteroaryl group, n11 and n13 each independently represent an integer of 0 to 4, X¹² and X¹⁴ each independently represent an oxygen atom, a sulfur atom, or a nitrogen atom, in a case where X¹² is an oxygen atom or a sulfur atom, m12 represents 1, in a case where X¹² is a nitrogen atom, m12 represents 2, in a case where X¹⁴ is an oxygen atom or a sulfur atom, m14 represents 1, and in a case where X¹⁴ is a nitrogen atom, m14 represents 2. Preferred specific examples of the substituent represented by R¹¹ and R¹³ include an alkyl group, an aryl group, a halogen atom, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a heteroaryloxycarbonyl group, an amide group, a cyano group, a nitro group, a trifluoromethyl group, a sulfoxide group, and a sulfo group.

Examples of the chromatic dye include a pyrazoleazo compound, an anilinoazo compound, a triarylmethane compound, an anthraquinone compound, an anthrapyridone compound, a benzylidene compound, an oxonol compound, a pyrazolotriazoleazo compound, a pyridoneazo compound, a cyanine compound, a phenothiazine compound, a pyrrolopyrazoleazomethine compound, a xanthene compound, a phthalocyanine compound, a benzopyran compound, an indigo compound, and a pyrromethene compound.

The chromatic coloring material may be used in combination of two or more kinds thereof. In addition, in a case where the chromatic coloring material is used in combination of two or more kinds thereof, the combination of two or more chromatic coloring materials may form black. Examples of such a combination include the following aspects (1) to (7). In a case where two or more chromatic coloring materials are included in the coloring resin composition and the combination of two or more chromatic coloring materials forms black, the coloring resin composition according to the embodiment of the present invention can be preferably used as a near-infrared transmitting filter.

(1) aspect in which a red coloring material and a blue coloring material are contained.

(2) aspect in which a red coloring material, a blue coloring material, and a yellow coloring material are contained.

(3) aspect in which a red coloring material, a blue coloring material, a yellow coloring material, and a violet coloring material are contained.

(4) aspect in which a red coloring material, a blue coloring material, a yellow coloring material, a violet coloring material, and a green coloring material are contained.

(5) aspect in which a red coloring material, a blue coloring material, a yellow coloring material, and a green coloring material are contained.

(6) aspect in which a red coloring material, a blue coloring material, and a green coloring material are contained.

(7) aspect in which a yellow coloring material and a violet coloring material are contained.

[White Coloring Material]

Examples of the white coloring material include inorganic pigments (white pigments) such as titanium oxide, strontium titanate, barium titanate, zinc oxide, magnesium oxide, zirconium oxide, aluminum oxide, barium sulfate, silica, talc, mica, aluminum hydroxide, calcium silicate, aluminum silicate, hollow resin particles, and zinc sulfide. The white pigment is preferably particles having a titanium atom, more preferably titanium oxide. In addition, the white pigment is preferably a particle having a refractive index of 2.10 or more with respect to light having a wavelength of 589 nm. The above-mentioned refractive index is preferably 2.10 to 3.00 and more preferably 2.50 to 2.75.

In addition, as the white pigment, the titanium oxide described in “Titanium Oxide-Physical Properties and Applied Technology, written by Manabu Kiyono, pages 13 to 45, published on Jun. 25, 1991, published by Gihodo Shuppan Co., Ltd.” can also be used.

The white pigment is not limited to a compound formed of a single inorganic substance, and may be particles combined with other materials. For example, it is preferable to use a particle having a pore or other materials therein, a particle having a number of inorganic particles attached to a core particle, or a core-shell composite particle composed of a core particle formed of polymer particles and a shell layer formed of inorganic fine nanoparticles. With regard to the core-shell composite particle composed of a core particle formed of polymer particles and a shell layer formed of inorganic fine nanoparticles, reference can be made to, for example, the descriptions in paragraph Nos. 0012 to 0042 of JP2015-047520A, the contents of which are incorporated herein by reference.

As the white pigment, hollow inorganic particles can also be used. The hollow inorganic particles refer to inorganic particles having a structure with a cavity therein, and the cavity is enclosed by an outer shell. As the hollow inorganic particles, hollow inorganic particles described in JP2011-075786A, WO2013/061621A, JP2015-164881A, and the like can be used, the contents of which are incorporated herein by reference.

[Black Coloring Material]

The black coloring material is not particularly limited, and a known black coloring material can be used. Examples thereof include inorganic pigments (black pigments) such as carbon black, titanium black, and graphite, and carbon black or titanium black is preferable and titanium black is more preferable. The titanium black is black particles containing a titanium atom, and is preferably lower titanium oxide or titanium oxynitride. The surface of the titanium black can be modified, as necessary, according to the purpose of improving dispersibility, suppressing aggregating properties, and the like. For example, the surface of the titanium black can be coated with silicon oxide, titanium oxide, germanium oxide, aluminum oxide, magnesium oxide, or zirconium oxide. In addition, a treatment with a water-repellent substance as described in JP2007-302836A can be performed. Examples of the black pigment include Color Index (C. I.) Pigment Black 1 and 7. It is preferable that the titanium black has a small primary particle diameter of the individual particles and has a small average primary particle diameter. Specifically, the average primary particle diameter thereof is preferably 10 to 45 nm. The titanium black can be used as a dispersion. Examples thereof include a dispersion which includes titanium black particles and silica particles and in which the content ratio of Si atoms to Ti atoms is adjusted to a range of 0.20 to 0.50. With regard to the dispersion, reference can be made to the description in paragraphs 0020 to 0105 of JP2012-169556A, the contents of which are incorporated herein by reference. Examples of a commercially available product of the titanium black include Titanium black 10S, 12S, 13R, 13M, 13M-C, 13R-N, 13M-T (trade name; manufactured by Mitsubishi Materials Corporation) and Tilack D (trade name; manufactured by Akokasei Co., Ltd.).

In addition, as the black coloring material, organic black coloring materials such as a bisbenzofuranone compound, an azomethine compound, a perylene compound, and an azo compound can also be used. Examples of the bisbenzofuranone compound include the compounds described in JP2010-534726A, JP2012-515233A, JP2012-515234A, and the like, and the bisbenzofuranone compound is available, for example, as “Irgaphor Black” manufactured by BASF. Examples of the perylene compound include compounds described in paragraph Nos. 0016 to 0020 of JP2017-226821A, and C. I. Pigment Black 31 and 32. Examples of the azomethine compound include the compounds described in JP1989-170601A (JP-1401-170601A) and JP1990-034664A (JP-H02-034664A), and the azomethine compound is available, for example, “CHROMOFINE BLACK A1103” manufactured by Dainichiseika Color & Chemicals Mfg. Co., Ltd.

The coloring material used in the composition according to the embodiment of the present invention may be only the above-described black coloring material, or may further include the chromatic coloring material. According to this aspect, it is easy to obtain a composition with which a film having a high light shielding properties in the visible region can be formed. In a case where the black coloring material and the chromatic coloring material are used in combination as the coloring material, the mass ratio of the two is preferably black coloring material:chromatic coloring material=100:10 to 300, and more preferably 100:20 to 200. In addition, it is preferable to use the black pigment as the black colorant, and it is preferable to use the chromatic pigment as the chromatic coloring material.

Examples of the chromatic coloring material include a red coloring material, a green coloring material, a blue coloring material, a yellow coloring material, a violet coloring material, and an orange coloring material.

As the chromatic coloring material, a chromatic pigment is preferable, and examples of the chromatic pigment include a red pigment, a green pigment, a blue pigment, a yellow pigment, a violet pigment, and an orange pigment.

In addition, as the chromatic pigment, a material in which an inorganic pigment or an organic-inorganic pigment is substituted with an organic chromophore can also be used. By substituting a part of an inorganic pigment or an organic-inorganic pigment with an organic chromophore, hue design can be easily performed. As the pigment A, a pigment including at least one selected from a red pigment, a blue pigment, or a yellow pigment is preferably used, a pigment including at least one selected from a blue pigment or a yellow pigment is more preferably used, and a pigment including a blue pigment is still more preferably used. According to this aspect, it is easy to form a film having excellent light shielding properties in the visible region. In addition, by using a blue pigment, a film having excellent light resistance can be formed. In addition, by using a yellow pigment, a visible transmittance of the obtained film can be uniform.

From the reason that it is easy to form a film having excellent light resistance, the blue pigment is preferably a phthalocyanine compound. In addition, examples of the blue pigment include Color Index (C. I.) Pigment Blue 1, 2, 15, 15:1, 15:2, 15:3, 15:4, 15:6, 16, 22, 29, 60, 64, 66, 79, 80, 87 (monoazo-based), and 88 (methine/polymethine-based), and at least one selected from C. I. Pigment Blue 15:3, C. I. Pigment Blue 15:6, or C. I. Pigment Blue 16 is preferable and C. I. Pigment Blue 15:6 is more preferable.

In addition, an aluminum phthalocyanine compound having a phosphorus atom can also be used as the blue pigment. Examples of such a compound include an aluminum phthalocyanine compound in which the ligand is a phosphoric acid ester. Specific examples of the aluminum phthalocyanine compound having a phosphorus atom include compounds described in paragraphs 0022 to 0030 of JP2012-247591A and paragraph 0047 of JP2011-157478A.

Examples of the yellow pigment include an azo compound, a quinophthalone compound, an isoindolinone compound, an isoindoline compound, and an anthraquinone compound, and an isoindoline compound is preferable. In addition, examples of the yellow pigment include C. I. Pigment Yellow 1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 24, 31, 32, 34, 35, 35:1, 36, 36:1, 37, 37:1, 40, 42, 43, 53, 55, 60, 61, 62, 63, 65, 73, 74, 77, 81, 83, 86, 93, 94, 95, 97, 98, 100, 101, 104, 106, 108, 109, 110, 113, 114, 115, 116, 117, 118, 119, 120, 123, 125, 126, 127, 128, 129, 137, 138, 139, 147, 148, 150, 151, 152, 153, 154, 155, 156, 161, 162, 164, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 179, 180, 181, 182, 185, 187, 188, 193, 194, 199, 213, 214, 231, and 232 (methine/polymethine-based).

In addition, a pigment described in JP2017-201003A and a pigment described in JP2017-197719A can be used as the yellow pigment. In addition, as the yellow pigment, a metal azo pigment which includes at least one kind of an anion selected from an azo compound represented by Formula (I) or an azo compound having a tautomeric structure of the azo compound represented by Formula (I), two or more kinds of metal ions, and a melamine compound can be used.

In the formula, R¹ and R² each independently represent —OH or —NR⁵R⁶, R³ and R⁴ each independently represent ═O or ═NR⁷, and R⁵ to R⁷ each independently represent a hydrogen atom or an alkyl group. The alkyl group represented by R⁵ to R⁷ preferably has 1 to 10 carbon atoms, more preferably has 1 to 6 carbon atoms, and still more preferably has 1 to 4 carbon atoms. The alkyl group may be linear, branched, or cyclic, and is preferably linear or branched and more preferably linear. The alkyl group may have a substituent. The substituent is preferably a halogen atom, a hydroxy group, an alkoxy group, a cyano group, or an amino group.

The details of the metal azo pigment can be found in paragraph Nos. 0011 to 0062 and 0137 to 0276 of JP2017-171912A, paragraph Nos. 0010 to 0062 and 0138 to 0295 of JP2017-171913A, paragraph Nos. 0011 to 0062 and 0139 to 0190 of JP2017-171914A, and paragraph Nos. 0010 to 0065 and 0142 to 0222 of JP2017-171915A, the contents of which are incorporated herein by reference.

Examples of the red pigment include a diketopyrrolopyrrole compound, an anthraquinone compound, an azo compound, and a quinacridone compound, and a diketopyrrolopyrrole compound is preferable. In addition, examples of the red pigment include C. I. Pigment Red 1, 2, 3, 4, 5, 6, 7, 9, 10, 14, 17, 22, 23, 31, 38, 41, 48:1, 48:2, 48:3, 48:4, 49, 49:1, 49:2, 52:1, 52:2, 53:1, 57:1, 60:1, 63:1, 66, 67, 81:1, 81:2, 81:3, 83, 88, 90, 105, 112, 119, 122, 123, 144, 146, 149, 150, 155, 166, 168, 169, 170, 171, 172, 175, 176, 177, 178, 179, 184, 185, 187, 188, 190, 200, 202, 206, 207, 208, 209, 210, 216, 220, 224, 226, 242, 246, 254, 255, 264, 270, 272, 279, and 294 (xanthene-based, Organo Ultramarine, Bluish Red).

In addition, as the red pigment, a diketopyrrolopyrrole-based pigment described in JP2017-201384A, in which the structure has at least one substituted bromine atom, a diketopyrrolopyrrole-based pigment described in paragraph Nos. 0016 to 0022 of JP6248838B, and the like can also be used. In addition, as the red pigment, a compound having a structure that an aromatic ring group in which a group bonded with an oxygen atom, a sulfur atom, or a nitrogen atom is introduced to an aromatic ring is bonded to a diketopyrrolopyrrole skeleton can be used.

Examples of the orange pigment include C. I. Pigment Orange 2, 5, 13, 16, 17:1, 31, 34, 36, 38, 43, 46, 48, 49, 51, 52, 55, 59, 60, 61, 62, 64, 71, and 73. Examples of the violet pigment include C. I. Pigment Violet 1, 19, 23, 27, 32, 37, 42, 60 (triarylmethane-based), and 61 (xanthene-based). Examples of the green pigment include C. I. Pigment Green 7, 10, 36, 37, 58, 59, 62, and 63. In addition, a halogenated zinc phthalocyanine pigment having an average number of halogen atoms in one molecule of 10 to 14, an average number of bromine atoms in one molecule of 8 to 12, and an average number of chlorine atoms in one molecule of 2 to 5 can also be used as the green pigment. Specific examples thereof include the compounds described in WO2015/118720A.

Examples of preferred combinations of the organic black coloring material and the chromatic coloring material include the following.

(A-1) aspect in which the organic black coloring material and the blue coloring material are contained

(A-2) aspect in which the organic black coloring material, the blue coloring material, and the yellow coloring material are contained

(A-3) aspect in which the organic black coloring material, the blue coloring material, the yellow coloring material, and the red coloring material are contained

(A-4) aspect in which the organic black coloring material, the blue coloring material, the yellow coloring material, and the violet coloring material are contained

In the above-described aspect (A-1), the mass ratio of the organic black coloring material and the blue coloring material is preferably organic black coloring material:blue coloring material=100:1 to 70, more preferably 100:5 to 60, and still more preferably 100:10 to 50.

In the above-described aspect (A-2), the mass ratio of the organic black coloring material, the blue coloring material, and the yellow coloring material is preferably organic black coloring material:blue coloring material:yellow coloring material=100:10 to 90:10 to 90, more preferably 100:15 to 85:15 to 80, and still more preferably 100:20 to 80:20 to 70.

In the above-described aspect (A-3), the mass ratio of the organic black coloring material, the blue coloring material, the yellow coloring material, and the red coloring material is preferably organic black coloring material:blue coloring material:yellow coloring material:red coloring material=100:20 to 150:1 to 60:10 to 100, more preferably 100:30 to 130:5 to 50:20 to 90, and still more preferably 100:40 to 120:10 to 40:30 to 80.

In the above-described aspect (A-4), the mass ratio of the organic black coloring material, the blue coloring material, the yellow coloring material, and the violet coloring material is preferably organic black coloring material:blue coloring material:yellow coloring material:violet coloring material=100:20 to 150:1 to 60:10 to 100, more preferably 100:30 to 130:5 to 50:20 to 90, and still more preferably 100:40 to 120:10 to 40:30 to 80.

As the coloring material used in the composition according to the embodiment of the present invention, a coloring material having a maximal absorption wavelength in a wavelength range of more than 700 nm and 800 nm or less can also be used. Such a coloring material is used as a near-infrared ray absorbing pigment. By using a coloring material including a pigment having such spectral characteristics as the coloring material, a wavelength of light transmitted through the obtained film can be shifted to a longer wavelength side. In the pigment having a maximal absorption wavelength in a wavelength range of more than 700 nm and 800 nm or less, a ratio A¹/A² of an absorbance A¹ at a wavelength of 500 nm to an absorbance A² at the maximal absorption wavelength is preferably 0.08 or less and more preferably 0.04 or less.

Examples of the pigment having a maximal absorption wavelength in a wavelength range of more than 700 nm and 800 nm or less include a pyrrolopyrrole compound, a cyanine compound, a squarylium compound, a phthalocyanine compound, a naphthalocyanine compound, a quaterrylene compound, a merocyanine compound, a croconium compound, an oxonol compound, an iminium compound, a dithiol compound, a triarylmethane compound, a pyrromethene compound, an azomethine compound, an anthraquinone compound, and a dibenzofuranone compound.

The content of the coloring material in the total solid content of the composition according to the embodiment of the present invention is preferably 10 to 60 mass %. The lower limit is preferably 20 mass % or more and more preferably 30 mass % or more.

In addition, the content of the above-described organic black coloring material in the coloring material is 10 mass % or more, preferably 20 mass % or more, more preferably 30 mass % or more, still more preferably 40 mass % or more, and even more preferably 50 mass % or more, and even still more preferably 60 mass % or more. A composition in the related art tends to contaminate an inside of a piping tube as the content of the organic black coloring material increases, but in the composition according to the embodiment of the present invention, since the inside of the piping tube can be less likely to be contaminated even in a case where the content of the organic black coloring material increases, the effects of the present invention are remarkably exhibited as the content of the organic black coloring material is higher.

In addition, the content of a lactam-based pigment as the organic black coloring material in the coloring material is 10 mass % or more, preferably 15 mass % or more, more preferably 20 mass % or more, still more preferably 30 mass % or more, and even more preferably 40 mass % or more, and even still more preferably 50 mass % or more.

In addition, the content of the above-described organic black coloring material in the total solid content of the composition according to the embodiment of the present invention is preferably 5 to 70 mass %. The lower limit is preferably 10 mass % or more and more preferably 15 mass % or more. The upper limit is preferably 65 mass % or less and more preferably 60 mass % or less.

[Near-Infrared Absorbing Coloring Material]

The near-infrared absorbing coloring material is preferably a pigment, and more preferably an organic pigment. In addition, the near-infrared absorbing coloring material preferably has a maximal absorption wavelength in a wavelength range of more than 700 nm and 1400 nm or less. In addition, the maximal absorption wavelength of the near-infrared absorbing coloring material is preferably 1200 nm or less, more preferably 1000 nm or less, and still more preferably 950 nm or less. In addition, in the near-infrared absorbing coloring material, A₅₅₀/A_(max), which is a ratio of an absorbance A₅₅₀ at a wavelength of 550 nm to an absorbance A_(max) at the maximal absorption wavelength, is preferably 0.1 or less, more preferably 0.05 or less, still more preferably 0.03 or less, and particularly preferably 0.02 or less. The lower limit is not particularly limited, but for example, may be 0.0001 or more or may be 0.0005 or more. In a case where the ratio of the above-described absorbance is within the above-described range, a near-infrared absorbing coloring material excellent in visible light transparency and near-infrared shielding properties can be obtained. In the present invention, the maximal absorption wavelength of the near-infrared absorbing coloring material and values of absorbance at each wavelength are values obtained from an absorption spectrum of a film formed by using a coloring resin composition including the near-infrared absorbing coloring material.

The near-infrared absorbing coloring material is not particularly limited, and examples thereof include a pyrrolopyrrole compound, a cyanine compound, a squarylium compound, a phthalocyanine compound, a naphthalocyanine compound, a quaterrylene compound, a merocyanine compound, a croconium compound, an oxonol compound, an iminium compound, a dithiol compound, a triarylmethane compound, a pyrromethene compound, an azomethine compound, an anthraquinone compound, a dibenzofuranone compound, and a dithiolene metal complex. Examples of the pyrrolopyrrole compound include compounds described in paragraph Nos. 0016 to 0058 of JP2009-263614A, compounds described in paragraph Nos. 0037 to 0052 of JP2011-068731A, and compounds described in paragraph Nos. 0010 to 0033 of WO2015/166873A. Examples of the squarylium compound include compounds described in paragraph Nos. 0044 to 0049 of JP2011-208101A, compounds described in paragraph Nos. 0060 and 0061 of JP6065169B, compounds described in paragraph No. 0040 of WO2016/181987A, compounds described in JP2015-176046A, compounds described in paragraph No. 0072 of WO2016/190162A, compounds described in paragraph Nos. 0196 to 0228 of JP2016-074649A, compounds described in paragraph No. 0124 of JP2017-067963A, compounds described in WO2017/135359A, compounds described in JP2017-114956A, compounds described in JP6197940B, and compounds described in WO2016/120166A. Examples of the cyanine compound include compounds described in paragraph Nos. 0044 and 0045 of JP2009-108267A, compounds described in paragraph Nos. 0026 to 0030 of JP2002-194040A, compounds described in JP2015-172004A, compounds described in JP2015-172102A, compounds described in JP2008-088426A, compounds described in paragraph No. 0090 of WO2016/190162A, and compounds described in JP2017-031394A. Examples of the croconium compound include compounds described in JP2017-082029A. Examples of the iminium compound include compounds described in JP2008-528706A, compounds described in JP2012-012399A, compounds described in JP2007-092060A, and compounds described in paragraph Nos. 0048 to 0063 of WO2018/043564A. Examples of the phthalocyanine compound include compounds described in paragraph No. 0093 of JP2012-077153A, oxytitanium phthalocyanine described in JP2006-343631A, compounds described in paragraph Nos. 0013 to 0029 of JP2013-195480A, and vanadium phthalocyanine compounds described in JP6081771B. Examples of the naphthalocyanine compound include compounds described in paragraph No. 0093 of JP2012-077153A. Examples of the dithiolene metal complex include compounds described in JP5733804B.

In addition, as the near-infrared absorbing coloring material, squarylium compounds described in JP2017-197437A, squarylium compounds described in JP2017-025311A, squarylium compounds described in WO2016/154782A, squarylium compounds described in JP5884953B, squarylium compounds described in JP6036689B, squarylium compounds described in JP5810604B, squarylium compounds described in paragraph Nos. 0090 to 0107 of WO2017/213047A, pyrrole ring-containing compounds described in paragraph Nos. 0019 to 0075 of JP2018-054760A, pyrrole ring-containing compounds described in paragraph Nos. 0078 to 0082 of JP2018-040955A, pyrrole ring-containing compounds described in paragraph Nos. 0043 to 0069 of JP2018-002773A, squarylium compounds having an aromatic ring at the a-amide position described in paragraph Nos. 0024 to 0086 of JP2018-041047A, amide-linked squarylium compounds described in JP2017-179131A, compounds having a pyrrole bis-type squarylium skeleton or a croconium skeleton described in JP2017-141215A, dihydrocarbazole bis-type squarylium compounds described in JP2017-082029, asymmetric compounds described in paragraph Nos. 0027 to 0114 of JP2017-068120A, pyrrole ring-containing compounds (carbazole type) described in JP2017-067963A, phthalocyanine compounds described in JP6251530B, colorants described in JP2013-77009A, JP2014-130338A, and WO2015/166779A, combinations of colorants described in these references, and the like can also be used.

The content of the coloring material in the total solid content of the coloring resin composition is 30 mass % or more, preferably 30 to 90 mass %, more preferably 30 to 80 mass %, and still more preferably 30 to 70 mass %.

In addition, the content of the pigment in the total solid content of the coloring resin composition is preferably 30 mass % or more, preferably 30 to 90 mass %, more preferably 30 to 80 mass %, and still more preferably 30 to 70 mass %.

In addition, the content of the dye in the coloring material is preferably 50 mass % or less, more preferably 40 mass % or less, and still more preferably 30 mass % or less.

In addition, from the reason that it is easy to more effectively suppress the change in film thickness in a case where the obtained film is heated to a high temperature, it is also preferable that the coloring resin composition according to the embodiment of the present invention does not substantially include the dye. The case where the coloring resin composition according to the embodiment of the present invention does not substantially include the dye means that the content of the dye in the total solid content of the coloring resin composition according to the embodiment of the present invention is preferably 0.1 mass % or less, more preferably 0.05 mass % or less, and particularly preferably 0 mass %.

<Specific Resin>

The coloring resin composition according to the embodiment of the present invention includes a resin (specific resin) which includes at least one repeating unit selected from the group consisting of repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5) and in which a proportion of a total amount of the repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5) with respect to a total molar amount of all repeating units included in the resin exceeds 60 mol %.

The proportion of the total amount of the repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5) with respect to a total molar amount of all repeating units included in the specific resin is measured by the following method.

The specific resin is thermally decomposed by a thermal decomposition GC-MS, and mass spectrometry is performed to identify the structure of the decomposed repeating units. From the molar mass of the identified structure, the molar amount of the repeating unit present in the specific resin can be identified.

The above-described proportion of the total amount is preferably 70 mol % or more and more preferably 80 mol % or more. The upper limit is not particularly limited, and may be 100 mol % or less.

[Formula (1-1)]

—R¹¹, R¹², and R¹³—

In Formula (1-1), R¹¹, R¹², and R¹³ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, and a hydrogen atom or an alkyl group is preferable and a hydrogen atom is more preferable.

As the above-described alkyl group, an alkyl group having 1 to 10 carbon atoms is preferable, an alkyl group having 1 to 4 carbon atoms is more preferable, and a methyl group is still more preferable.

In the present specification, unless otherwise specified, the description of “alkyl group” or “aliphatic hydrocarbon group” include all alkyl groups or aliphatic hydrocarbon groups having a linear, branched, or a cyclic structure.

As the above-described aromatic hydrocarbon group, an aromatic hydrocarbon ring having 6 to 20 carbon atoms is preferable, and a phenyl group is more preferable.

The above-described alkyl group or the above-described aromatic hydrocarbon group may have a substituent as long as the effects of the present invention can be obtained.

In addition, the above-described aromatic hydrocarbon group may be bonded to another aromatic hydrocarbon ring or another aromatic heterocyclic ring as long as the effects of the present invention can be obtained. Examples of an aspect of the above-described bonding include a fused ring, a crosslinked ring, and a spiro ring.

—Ar—

In Formula (1-1), Ar represents an aromatic group having 5 to 30 ring members, and an aromatic hydrocarbon group having 6 to 20 carbon atoms or an aromatic heterocyclic group having 5 to 20 ring members is preferable and an aromatic hydrocarbon group having 6 to 20 carbon atoms is more preferable.

As the above-described aromatic hydrocarbon group, a phenyl group or a naphthyl group is preferable, and a phenyl group is more preferable.

As the above-described aromatic heterocyclic group, an aromatic heterocyclic group including a nitrogen atom, a sulfur atom, or an oxygen atom as a heteroatom is preferable. Only one of the above-described heteroatom may be present in the aromatic heterocyclic group, or two or more thereof may be present. In a case where two or more heteroatoms are present in the aromatic heterocyclic group, the above-described heteroatoms may be the same or different from each other. Examples of the above-described aromatic heterocyclic group include a thienyl group, a pyridyl group, and a 1-imidazolyl group.

The above-described aromatic group may have a substituent as long as the effects of the present invention can be obtained. Examples of the substituent include acid groups such as a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, a phosphonic acid group, an active imide group (substituted sulfonamide group, —S(═O)₂NHC(═O)R, —S(═O)₂NHS(═O)₂R, or —C(═O)NHS(═O)₂R; R is a hydrocarbon group which may have a substituent), and a sulfonamide group (—S(═O)₂NR^(S1) ₂ or R^(S2)—S(═O)₂—NR^(S3)—; R^(S1) represents a hydrogen atom or a hydrocarbon group which may have a substituent, and it is preferable that at least one of R^(S1)'s is a hydrogen atom and it is more preferable that both R^(S1)'s are hydrogen atoms; R^(S2) represents a monovalent substituent, and a hydrocarbon group is preferable; R^(S3) represents a hydrogen atom or a hydrocarbon group, and a hydrocarbon group is preferable), an amino group, an alkyl group, an aromatic hydrocarbon group, an aromatic heterocyclic group, and a halogen atom.

In addition, these substituents may be bonded to the above-described aromatic group through a linking group. Examples of the linking group include an aliphatic hydrocarbon group, an aromatic hydrocarbon group, —O—, —C(═O)—, —S—, —S(═O)₂—, —NR^(N)—, or a group in which two or more of these groups are bonded. R^(N) represents a hydrogen atom or a hydrocarbon group, and a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group is preferable, a hydrogen atom or an alkyl group is more preferable, and a hydrogen atom is particularly preferable. In addition, two or more of the above-described substituents may be bonded to the above-described linking group.

Examples of a preferred aspect of the present invention include an aspect in which the above-described substituent is directly bonded to the above-described aromatic group without the above-described linking group.

From the viewpoint of imparting alkali developability to the coloring resin composition, it is preferable that Ar has the above-described acid group such as a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, a phosphonic acid group, an active imide group, and a sulfonamide group.

In addition, the above-described acid group may form an ester bond with other structures. Examples of the other structures include a structure which includes a group having an alkyl group (for example, a methyl group, an ethyl group, and the like), a polymer chain, or an ethylenically unsaturated bond. Examples of the above-described polymer chain include a molecular chain described later, which has a molecular weight of 1,000 to 10,000 and does not have an acid group and a basic group.

In addition, the above-described amino group may form an amide bond, a urethane bond, or a urea bond with other structures. The above-described other structure has the same meaning as the other structures described as the object to which the acid group is ester-bonded.

[Formula (1-1-1), Formula (1-1-2), and Formula (1-1-3)]

The repeating unit represented by Formula (1-1) is preferably a repeating unit represented by Formula (1-1-1), a repeating unit represented by Formula (1-1-2), or a repeating unit represented by Formula (1-1-3).

In addition, as the repeating unit represented by Formula (1-1), the specific resin preferably includes a repeating unit represented by Formula (1-1-2), and more preferably includes a repeating unit represented by Formula (1-1-2) and a repeating unit represented by Formula (1-1-3).

In Formulae (1-1-1), (1-1-2), and (1-1-3), R¹¹, R¹², and R¹³ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, Ar¹ represents an aromatic group having 5 to 30 ring members, X¹¹ represents a group represented by a combination of at least one group selected from the group consisting of an alkyl group having 1 to 30 carbon atoms, an aromatic hydrocarbon group having 6 to 20 carbon atoms, a saturated aliphatic hydrocarbon group having 1 to 30 carbon atoms, and an aromatic hydrocarbon group having 6 to 20 carbon atoms, and —C(═O)O— or —C(═O)NR^(N)—, n1 represents an integer of 0 to a maximum number of substitutions of Ar¹, Ar² represents an aromatic group having 5 to 30 ring members, X¹²'s each independently represent a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, a phosphonic acid group, an active imide group, or a sulfonamide group, n2 represents an integer of 1 to a maximum number of substitutions of Ar², Ar³ represents an aromatic group having 5 to 30 ring members, X¹³'s each independently represent a group represented by any one of Formula (E-1), . . . , or (E-11), and n3 represents an integer of 1 to a maximum number of substitutions of Ar³. R^(N) represents a hydrogen atom or a hydrocarbon group, and a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group is preferable, a hydrogen atom or an alkyl group is more preferable, and a hydrogen atom is particularly preferable.

In Formulae (E-1) to (E-11), R^(E1) to R^(E3), R^(E13), R^(E15), R^(E17), and R^(E19) each independently represent a monovalent substituent, R^(E4), to R^(E12), R^(E14), R^(E16), and R^(E18), each independently represent a hydrogen atom or a monovalent substituent, at least one of R^(E4) or R^(E5) is a monovalent substituent, at least one of R^(E6) or R^(E7) is a monovalent substituent, at least one of R^(E8) or R^(E9) is a monovalent substituent, at least one of R^(E10) or RE¹¹ is a monovalent substituent, and * represents a bonding site with Ar³ in Formula (1-1-3).

—R¹¹, R¹², and R¹³—

R¹¹, R¹², and R¹³ in Formulae (1-1-1), (1-1-2), and (1-1-3) have the same meaning as R¹¹, R¹², and R¹³ in Formula (1-1), respectively, and the preferred aspects thereof are also the same.

—Ar¹—

Ar¹ in Formula (1-1-1) has the same meaning as Ar in Formula (1-1), and the preferred aspect thereof is also the same.

—X¹¹—

In Formula (1-1-1), X¹¹ represents a group represented by a combination of at least one group selected from the group consisting of an alkyl group having 1 to 30 carbon atoms, an aromatic hydrocarbon group having 6 to 20 carbon atoms, a saturated aliphatic hydrocarbon group having 1 to 30 carbon atoms, and an aromatic hydrocarbon group having 6 to 20 carbon atoms, and —C(═O)O— or —C(═O)NR^(N)—, and from the viewpoint of heat resistance and affinity with an organic solvent, a group represented by a combination of at least one group selected from the group consisting of a saturated aliphatic hydrocarbon group having 1 to 30 carbon atoms and an aromatic hydrocarbon group having 6 to 20 carbon atoms, and —C(═O)O— or —C(═O)NR^(N)—.

As the above-described alkyl group having 1 to 30 carbon atoms, an alkyl group having 1 to 20 carbon atoms is preferable, an alkyl group having 1 to 10 carbon atoms is more preferable, and an alkyl group having 1 to 4 carbon atoms is still more preferable.

As the above-described aromatic hydrocarbon group having 6 to 20 carbon atoms, a phenyl group or a naphthyl group is preferable, and a phenyl group is more preferable.

As the above-described saturated aliphatic hydrocarbon group having 1 to 30 carbon atoms, a saturated aliphatic hydrocarbon group having 1 to 20 carbon atoms is preferable, a saturated aliphatic hydrocarbon group having 1 to 10 carbon atoms is more preferable, and a saturated aliphatic hydrocarbon group having 1 to 4 carbon atoms is still more preferable.

From the viewpoint of heat resistance and affinity with an organic solvent, as the group represented by a combination of at least one group selected from the group consisting of a saturated aliphatic hydrocarbon group having 1 to 30 carbon atoms and an aromatic hydrocarbon group having 6 to 20 carbon atoms, and —C(═O)O— or —C(═O)NR^(N)—, a group in which the bonding site with Ar¹ in Formula (1-1-1) is *—C(═O)O— or *—C(═)NR^(N)—. * represents a bonding site with Ar¹.

In addition, as the group represented by a combination of at least one group selected from the group consisting of a saturated aliphatic hydrocarbon group having 1 to 30 carbon atoms and an aromatic hydrocarbon group having 6 to 20 carbon atoms, and —C(═O)O— or —C(═O)NR^(N)—, a group represented by Formula (D-1) or Formula (D-2) is preferable and a group represented by Formula (D-1) is more preferable.

In Formula (D-1) or Formula (D-2), *'s each independently represent a bonding site with Ar¹ in Formula (1-1-1), R^(D1) represents a substituent D described later, R^(D2) and R^(D3) each independently represent a hydrogen atom or a substituent D described later.

The substituent D is a group represented by a combination of at least one group selected from the group consisting of an alkyl group having 1 to 30 carbon atoms, an aromatic hydrocarbon group having 6 to 20 carbon atoms, an aliphatic saturated hydrocarbon group having 1 to 30 carbon atoms, and an aromatic hydrocarbon group having 6 to 20 carbon atoms, and —C(═O)O— or —C(═O)NR^(N)—.

Preferred aspects of the alkyl group having 1 to 30 carbon atoms, the aromatic hydrocarbon group having 6 to 20 carbon atoms, or the aliphatic saturated hydrocarbon group having 1 to 30 carbon atoms in the substituent D have the same meanings as the preferred aspects of these groups in X¹¹ described above.

From the viewpoint of heat resistance and affinity with an organic solvent, the substituent D in R^(D1) is preferably an alkyl group having 1 to 30 carbon atoms or an aromatic hydrocarbon group having 6 to 20 carbon atoms, more preferably an alkyl group having 1 to 30 carbon atoms, still more preferably an alkyl group having 1 to 10 carbon atoms, particularly preferably an alkyl group having 1 to 4 carbon atoms, and most preferably a methyl group.

Both R^(D2) and R^(D3) may be hydrogen atoms, but it is preferable that at least one thereof is the above-described substituent D, and it is more preferable that one is a hydrogen atom and the other is the above-described substituent D.

The substituent D in R^(D2) and R^(D3) is preferably an alkyl group having 1 to 30 carbon atoms or an aromatic hydrocarbon group having 6 to 20 carbon atoms, more preferably an alkyl group having 1 to 30 carbon atoms, still more preferably an alkyl group having 1 to 10 carbon atoms, and particularly preferably an alkyl group having 1 to 4 carbon atoms.

—n1—In Formula (1-1-1), n1 represents an integer of 0 to a maximum number of substitutions of Ar¹, and 0 or 1 is preferable and 0 is more preferable.

The maximum number of substitutions of Ar¹ refers to the maximum number of substituents which can be included in the aromatic group having 5 to 30 ring members, represented by Ar¹, and in a case where Ar¹ is a benzene ring structure, the maximum number of substitutions is 5. Hereinafter, the above-described contents are the same in the description of the maximum number of substitutions.

—Ar²—

Ar² in Formula (1-1-2) has the same meaning as Ar in Formula (1-1), and the preferred aspect thereof is also the same.

—X¹²—

In Formula (1-1-2), X¹² represents a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, or a phosphonic acid group, and a hydroxy group or a carboxy group is preferable and a carboxy group is more preferable.

—n2—

In Formula (1-1-2), n2 represents an integer of 1 to a maximum number of substitutions of Ar², and 1 or 2 is preferable and 1 is more preferable.

—Ar³—

Ar³ in Formula (1-1-3) has the same meaning as Ar in Formula (1-1), and the preferred aspect thereof is also the same.

—X¹³—

In Formula (1-1-3), X¹³ represents a group represented by any one of Formula (E-1), . . . , or (E-11), and a group represented by Formula (E-1) or Formula (E-2) is preferable and a group represented by Formula (E-2) is more preferable.

In Formulae (E-1) to (E-11), R^(E1) to R^(E19) are each independently preferably a group represented by an aliphatic hydrocarbon group, an aromatic group, or at least two bonds selected from the group consisting of an aliphatic hydrocarbon group, an aromatic group, —O—, —C(═O)—, —S—, —S(═O)₂—, —C(═O)O—, —C(═O)NR^(N)—, —OC(═O)NR^(N)—, —NR^(N)C(═O)NR^(N)—, —CH₂CH(OH)CH₂—, an ethylenically unsaturated bond, and a polymer chain.

As the above-described aliphatic hydrocarbon group, an aliphatic hydrocarbon group having 1 to 20 carbon atoms is preferable and an aliphatic saturated hydrocarbon group having 1 to 20 carbon atoms is more preferable.

As the above-described aromatic group, a group same as Ar in Formula (1-1) is preferable.

Examples of the above-described group having an ethylenically unsaturated bond include an acryloyl group, an acryloyloxy group, an acrylamide group, a vinylphenyl group, and an allyl group, and from the viewpoint of reactivity, an acryloyloxy group is preferable.

As the above-described polymer chain, a polymer chain including at least one repeating unit selected from the group consisting of repeating units each represented by Formulae (1-1) to (1-5), a repeating unit derived from a (meth)acrylic acid, and a repeating unit derived from a (meth)acrylic acid ester compound is preferable, and a polymer chain including at least one repeating unit selected from the group consisting of repeating units each represented by Formulae (1-1) to (1-5) and a repeating unit derived from a (meth)acrylic acid ester compound is more preferable.

The repeating unit represented by Formulae (1-1) to (1-5) included in the polymer chain is preferably a repeating unit not having the above-described polymer chain, more preferably the repeating unit represented by Formula (1-1-1), a repeating unit represented by Formula (1-2-1) described later, the repeating unit represented by Formula (1-3), the repeating unit represented by Formula (1-4), or the repeating unit represented by Formula (1-5), and still more preferably the repeating unit represented by Formula (1-1-1) or a repeating unit represented by Formula (1-2-1) described later.

The repeating unit derived from a (meth)acrylic acid in the polymer chain is preferably a repeating unit represented by Formula (1-6) described later, and the repeating unit derived from a (meth)acrylic acid ester compound is preferably a repeating unit represented by Formula (1-7) described later (more preferably, a repeating unit represented by Formula (1-7) in which R^(A2) in Formula (1-7) is Formula (F-1)).

In addition, the repeating unit included in the polymer chain is included in the total molar amount of all repeating units included in the specific resin.

Among these, R^(E1) to R^(E7) are preferably a group represented by any one of Formula (F-1), . . . , or Formula (F-5). In the following formulae, *'s each independently represent a bonding site with other structures.

In Formula (F-1), R^(F1) represents an alkyl group or an aromatic hydrocarbon group, and an alkyl group having 1 to 8 carbon atoms is preferable and an alkyl group having 1 to 4 carbon atoms is more preferable.

In Formula (F-2), R^(F2)'s each independently represent an alkylene group, a divalent aromatic hydrocarbon group, —C(═O)NR^(N)—, —OC(═O)NR^(N)—, —NR^(N)C(═O)NR^(N)—, or a group in which two or more these groups are bonded, and an alkylene group is preferable. R^(N) is as described above.

In the present specification, in a case of being simply described as —C(═O)NR^(N)—, —OC(═O)NR^(N)—, and —NR^(N)C(═O)NR^(N)—, the orientation of these bonds in the structure is not particularly limited.

As the above-described alkylene group, an alkylene group having 2 to 10 carbon atoms is preferable, an alkylene group having 2 to 4 carbon atoms is more preferable, an ethylene group or a propylene group is still more preferable.

As the above-described divalent aromatic hydrocarbon group, a phenylene group is preferable.

In Formula (F-2), n represents an integer of 0 or more, and is preferably an integer of 0 to 20, more preferably an integer of 0 to 10, still more preferably 0, 1, or 2, and particularly preferably 0 or 1.

In Formula (F-2), R^(F3) represents a hydrogen atom or a methyl group.

In Formula (F-3), R^(F4) represents an alkylene group, a divalent aromatic hydrocarbon group, —C(═O)NR^(N)—, —OC(═O)NR^(N)—, —NR^(N)C(═O)NR^(N)—, or a group in which two or more these groups are bonded, and an alkylene group is preferable. R^(N) is as described above.

As the above-described alkylene group, an alkylene group having 2 to 10 carbon atoms is preferable, and an alkylene group having 2 to 4 carbon atoms is more preferable.

As the above-described divalent aromatic hydrocarbon group, a phenylene group is preferable.

In Formula (F-3), R^(F5) represents a hydrogen atom or a methyl group.

In Formula (F-4), R^(F6) represents an alkylene group, an arylene group, —C(═O)NR^(N)—, —OC(═O)NR^(N)—, —NR^(N)C(═O)NR^(N)—, or a group in which two or more these groups are bonded, and an alkylene group or a group in which two or more alkylene groups are bonded by —OC(═O)NR^(N)— is preferable. R^(N) is as described above.

As the above-described alkylene group, an alkylene group having 2 to 20 carbon atoms is preferable, and an alkylene group having 2 to 10 carbon atoms is more preferable.

In Formula (F-4), Polymer represents the polymer chain in the above description of R^(E1) to R^(E7), and the preferred aspect thereof is also the same.

In Formula (F-5), R^(F7) represents a single bond, an alkylene group, or a divalent aromatic hydrocarbon group, and a single bond is preferable.

As the above-described alkylene group, an alkylene group having 2 to 20 carbon atoms is preferable, and an alkylene group having 2 to 10 carbon atoms is more preferable.

As the above-described divalent aromatic hydrocarbon group, a phenylene group is preferable.

In Formula (F-5), R^(F8) represents an alkylene group or a divalent aromatic hydrocarbon group, and an alkylene group is preferable.

As the above-described alkylene group, an alkylene group having 2 to 20 carbon atoms is preferable, and an alkylene group having 2 to 10 carbon atoms is more preferable.

As the above-described divalent aromatic hydrocarbon group, a phenylene group is preferable.

In Formula (F-5), m represents an integer of 1 or more, and is preferably an integer of 2 to 50 and more preferably an integer of 2 to 30.

In Formula (F-5), R^(F9) represents an alkyl group or a monovalent aromatic hydrocarbon group, and an alkyl group is more preferable.

As the above-described alkyl group, an alkyl group having 1 to 20 carbon atoms is preferable, and an alkyl group having 1 to 10 carbon atoms is more preferable.

As the above-described monovalent aromatic hydrocarbon group, a phenyl group is preferable.

—n3—

In Formula (1-1-3), n3 represents an integer of 1 to a maximum number of substitutions of Ar³, and 1 or 2 is preferable and 1 is more preferable.

The repeating unit represented by Formula (1-1) is preferably a repeating unit derived from a vinyl aromatic hydrocarbon compound (for example, vinylstyrene, vinylnaphthalene, and the like) which may have a substituent or a vinyl aromatic compound (for example, vinylthiophene, vinylpyridine, vinylimidazole, and the like) which may have a substituent.

[Repeating Unit Represented by Formula (1-2)]

—R²¹, R²², and R²³—

R²¹, R²², and R²³ in Formula (1-2) have the same meaning as R¹¹, R¹², and R¹³ in Formula (1-1), respectively, and the preferred aspects thereof are also the same.

—R²⁴ and R²⁵—

R²⁴ and R²⁵ each independently represent a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms, and R²⁴ and R²⁵ may be bonded to each other to form a ring structure.

It is preferable that at least one of R²⁴ or R²⁵ represents an alkyl group having 1 to 30 carbon atoms or an aromatic hydrocarbon group having 6 to 30 carbon atoms, or R²⁴ and R²⁵ are bonded to each other to form a ring structure.

R²⁴ and R²⁵ are each independently preferably an alkyl group having 1 to 30 carbon atoms, and more preferably an alkyl group having 1 to 20 carbon atoms.

As the aromatic hydrocarbon group having 6 to 30 carbon atoms in R²⁴ and R²⁵, a phenyl group or a naphthyl group is preferable, and a phenyl group is more preferable.

Examples of the ring structure formed by bonding R²⁴ and R²⁵ include aliphatic heterocyclic ring structures such as a piperidine ring, a piperazine ring, and a morpholine ring.

The alkyl group having 1 to 30 carbon atoms or the aromatic hydrocarbon group having 6 to 30 carbon atoms in R²⁴ and R²⁵, or the ring structure formed by bonding R²⁴ and R²⁵ may have a substituent as long as the effects of the present invention can be obtained. Examples of the substituent include acid groups such as a carboxy group, a sulfo group, a phosphoric acid group, a phosphonic acid group, an active imide group, and a sulfonamide group, an amino group, an alkyl group, an aryl group, and a halogen atom. In addition, the aromatic hydrocarbon group having 6 to 30 carbon atoms in R²⁴ and R²⁵ may have a hydroxy group as a substituent.

From the viewpoint of imparting alkali developability to the coloring resin composition, it is preferable that the alkyl group having 1 to 30 carbon atoms or the aromatic hydrocarbon group having 6 to 30 carbon atoms, or the ring structure formed by bonding R²⁴ and R²⁵ has the above-described acid group such as a carboxy group, a sulfo group, a phosphoric acid group, a phosphonic acid group, an active imide group, and a sulfonamide group. In addition, in a case where at least one of R²⁴ or R²⁵ is an aromatic hydrocarbon group having 6 to 30 carbon atoms, the aromatic hydrocarbon group may have a hydroxy group as an acid group.

In addition, the above-described acid group may form an ester bond with other structures. Examples of the other structures include a structure which includes a group having a polymer chain or an ethylenically unsaturated bond. Examples of the above-described polymer chain include a molecular chain described later, which has a molecular weight of 1,000 to 10,000 and does not have an acid group and a basic group.

In addition, the above-described amino group may form an amide bond, a urethane bond, or a urea bond with other structures. The above-described other structure has the same meaning as the other structures described as the object to which the acid group is ester-bonded.

[Formula (1-2-1), Formula (1-2-2), and Formula (1-2-3)]

The repeating unit represented by Formula (1-2) is preferably a repeating unit represented by Formula (1-2-1), a repeating unit represented by Formula (1-2-2), or a repeating unit represented by Formula (1-2-3).

In addition, as the repeating unit represented by Formula (1-2), the specific resin preferably includes a repeating unit represented by Formula (1-2-2), and more preferably includes a repeating unit represented by Formula (1-2-2) and a repeating unit represented by Formula (1-2-3).

In Formulae (1-2-1), (1-2-2), and (1-2-3), R²¹, R²², and R²³ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, R²⁶ and R²⁷ each independently represent an alkyl group having 1 to 30 carbon atoms, R²⁸ represents an aliphatic hydrocarbon group or an aromatic hydrocarbon group, X²¹'s each independently represents a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, a phosphonic acid group, an active imide group, or a sulfonamide group, n1 is 1 or 2, n2 is 0 or 1, n1+n2 is 2, n3 is an integer of 1 or more, R²⁹ represents an aliphatic hydrocarbon group or an aromatic hydrocarbon group, X²²'s each independently represent a group represented by any one of Formula (E-1), . . . , or (E-11), m1 represents 1 or 2, m2 represents 0 or 1, m1+m2 is 2, and m3 is an integer of 1 or more.

R²¹, R²², and R²³ in Formulae (1-2-1), (1-2-2), and (1-2-3) have the same meaning as R²¹, R²², and R²³ in Formula (1-2), respectively, and the preferred aspects thereof are also the same.

—R²⁶ and R²⁷—

In Formula (1-2-1), R²⁶ and R²⁷ each independently represent an alkyl group having 1 to 30 carbon atoms, and an alkyl group having 1 to 10 carbon atoms is preferable and an alkyl group having 1 to 4 carbon atoms is more preferable.

—R²⁸—

In Formula (1-2-2), R²⁸ represents an aliphatic hydrocarbon group or an aromatic hydrocarbon group, and an aliphatic hydrocarbon group is preferable and an aliphatic saturated hydrocarbon group is more preferable.

As the above-described aliphatic hydrocarbon group, an aliphatic hydrocarbon group having 2 to 30 carbon atoms is preferable and an aliphatic hydrocarbon group having 2 to 20 carbon atoms is more preferable.

As the above-described aromatic hydrocarbon group, a group obtained by removing (1+n3) hydrogen atoms from a benzene ring is preferable.

—X²¹—

In Formula (1-2-2), in a case where R²⁸ is an aliphatic hydrocarbon group, X²¹'s are each independently preferably a carboxy group, a sulfo group, a phosphoric acid group, a phosphonic acid group, an active imide group, or a sulfonamide group, and more preferably a carboxy group.

In Formula (1-2-2), in a case where R²⁸ is an aromatic hydrocarbon group, X²¹'s are each independently preferably a hydroxy group or a carboxy group, and more preferably a carboxy group.

—n1, n2, and n3—

In Formula (1-2-2), it is preferable that n1 is 1 and n2 is 1.

In Formula (1-2-2), n3 is an integer of 1 or more, and is preferably 1 to 10, more preferably 1 to 4, still more preferably 1 or 2, and particularly preferably 1.

—R²⁹—

In Formula (1-2-3), R²⁹ represents an aliphatic hydrocarbon group or an aromatic hydrocarbon group, and an aliphatic hydrocarbon group is preferable and an aliphatic saturated hydrocarbon group is more preferable.

As the above-described aliphatic hydrocarbon group, an aliphatic hydrocarbon group having 2 to 30 carbon atoms is preferable and an aliphatic hydrocarbon group having 2 to 20 carbon atoms is more preferable.

As the above-described aromatic hydrocarbon group, a group obtained by removing (1+m3) hydrogen atoms from a benzene ring is preferable.

—X²²—

In Formula (1-2-3), in a case where R²⁹ is an aliphatic hydrocarbon group, X²²'s are each independently preferably a group represented by any one of Formula (E-2), Formula (E-3), Formula (E-4), or Formula (E-5), and more preferably a group represented by Formula (E-2).

In Formula (1-2-3), in a case where R²⁹ is an aromatic hydrocarbon group, X²²'s are each independently preferably a group represented by any one of Formula (E-1) or Formula (E-2), and more preferably a group represented by Formula (E-2).

—m1, m2, and m3—

In Formula (1-2-3), it is preferable that m1 is 1 and m2 is 1.

In Formula (1-2-3), m3 is an integer of 1 or more, and is preferably 1 to 10, more preferably 1 to 4, still more preferably 1 or 2, and particularly preferably 1.

The repeating unit represented by Formula (1-2) is preferably a repeating unit derived from an acrylamide compound which may have a substituent.

[Repeating Unit Represented by Formula (1-3)]

—R³¹, R³², and R³³—

R³¹, R³², and R³³ in Formula (1-3) have the same meaning as R¹¹, R¹², and R¹³ in Formula (1-1), respectively, and the preferred aspects thereof are also the same.

—R³⁴ and R³⁵—

In Formula (1-3), R³⁴ and R³⁵ each independently represent a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms, and an alkyl group having 1 to 30 carbon atoms is preferable.

As the above-described alkyl group having 1 to 30 carbon atoms, an alkyl group having 1 to 10 carbon atoms is preferable, and an alkyl group having 1 to 4 carbon atoms is more preferable.

As the above-described aromatic hydrocarbon group having 6 to 30 carbon atoms, a phenyl group or a naphthyl group is preferable, and a phenyl group is more preferable.

The above-described alkyl group having 1 to 30 carbon atoms or the above-described aromatic hydrocarbon group having 6 to 30 carbon atoms may have a substituent as long as the effects of the present invention can be obtained.

In Formula (1-3), it is preferable that at least one of R³⁴ or R³⁵ represents an alkyl group having 1 to 30 carbon atoms or an aromatic hydrocarbon group having 6 to 30 carbon atoms.

In addition, it is preferable that R³⁴ and R³⁵ are bonded to each other to form a ring structure. As the ring structure to be formed, a lactam ring structure having 5 to 20 ring members is preferable, and a lactam ring structure having 5 to 10 ring members is more preferable.

The repeating unit represented by Formula (1-3) is preferably a repeating unit derived from an N-vinyl-N-acyl compound (N-vinylacetamide and the like) or an N-vinyllactam compound (N-vinyl-2-pyrrolidone, N-vinyl-ε-caprolactam, and the like).

[Repeating Unit Represented by Formula (1-4)]

—R⁴¹ and R⁴²—

R⁴¹ and R⁴² in Formula (1-4) have the same meaning as R¹¹ and R¹³ in Formula (1-1), respectively, and the preferred aspects thereof are also the same.

—R⁴³—

In Formula (1-4), R⁴³ represents a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms, and an alkyl group having 1 to 30 carbon atoms or an aromatic hydrocarbon group having 6 to 30 carbon atoms is preferable and an aromatic hydrocarbon group having 6 to 30 carbon atoms is more preferable.

As the above-described alkyl group having 1 to 30 carbon atoms, an alkyl group having 1 to 20 carbon atoms is preferable, and an alkyl group having 1 to 10 carbon atoms is more preferable.

As the above-described aromatic hydrocarbon group having 6 to 30 carbon atoms, an aromatic hydrocarbon group having 6 to 20 carbon atoms is preferable, a phenyl group or a naphthyl group is more preferable, and a phenyl group is still more preferable.

The above-described alkyl group having 1 to 30 carbon atoms or the above-described aromatic hydrocarbon group having 6 to 30 carbon atoms may have a substituent as long as the effects of the present invention can be obtained.

The repeating unit represented by Formula (1-4) is preferably a repeating unit derived from a maleimide compound (maleimide, N-alkylmaleimide, N-phenylmaleimide, and the like).

[Repeating Unit Represented by Formula (1-5)]

—R⁵¹ and R⁵²—

R⁵¹ and R⁵² in Formula (1-5) have the same meaning as R¹¹ and R¹² in Formula (1-1), respectively, and the preferred aspects thereof are also the same.

—R⁵³ and R⁵⁴—

In Formula (1-5), R⁵³ and R⁵⁴ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, and a hydrogen atom or an alkyl group is preferable and a hydrogen atom is more preferable.

As the above-described alkyl group, an alkyl group having 1 to 10 carbon atoms is preferable, an alkyl group having 1 to 4 carbon atoms is more preferable, and a methyl group is still more preferable.

As the above-described aromatic hydrocarbon group, an aromatic hydrocarbon ring having 6 to 20 carbon atoms is preferable, and a phenyl group is more preferable.

The above-described alkyl group or the above-described aromatic hydrocarbon group may have a substituent as long as the effects of the present invention can be obtained.

In addition, the above-described aromatic hydrocarbon group may be bonded to another aromatic hydrocarbon ring or another aromatic heterocyclic ring as long as the effects of the present invention can be obtained. Examples of an aspect of the above-described bonding include a fused ring, a crosslinked ring, and a spiro ring.

—R⁵⁵—

In Formula (1-5), R⁵⁵ represents a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms, and an alkyl group having 1 to 30 carbon atoms or an aromatic hydrocarbon group having 6 to 30 carbon atoms is preferable and an aromatic hydrocarbon group having 6 to 30 carbon atoms is more preferable.

As the above-described alkyl group having 1 to 30 carbon atoms, an alkyl group having 1 to 20 carbon atoms is preferable, and an alkyl group having 1 to 10 carbon atoms is more preferable.

As the above-described aromatic hydrocarbon group having 6 to 30 carbon atoms, an aromatic hydrocarbon group having 6 to 20 carbon atoms is preferable, a phenyl group or a naphthyl group is more preferable, and a phenyl group is still more preferable.

The above-described alkyl group having 1 to 30 carbon atoms or the above-described aromatic hydrocarbon group having 6 to 30 carbon atoms may have a substituent as long as the effects of the present invention can be obtained.

The repeating unit represented by Formula (1-5) is preferably a repeating unit derived from an itaconimide compound (itaconimide, N-alkylitaconimide, N-phenylitaconimide, and the like).

From the viewpoint of expanding the process window, the content of the repeating unit derived from a (meth)acrylic acid or a (meth)acrylic acid ester compound in the specific resin is preferably 0 to 20 mol % with respect to the total molar amount of all repeating units included in the specific resin.

The above-described content is preferably 0 to 15 mol % and more preferably 0 to 10 mol %.

In addition, in the present invention, an aspect in which the above-described content is 0 to 1 mol % (preferably 0 to 0.5 mol % and more preferably 0 to 0.1 mol %) is also a preferred aspect.

The repeating unit derived from a (meth)acrylic acid, which may be included in the specific resin, is preferably a repeating unit represented by Formula (1-6).

In addition, the repeating unit derived from a (meth)acrylic acid ester compound, which may be included in the specific resin, is preferably a repeating unit represented by Formula (1-7).

In Formula (1-6), R^(A1) represents a hydrogen atom or a methyl group, and a hydrogen atom is more preferable.

In Formula (1-7), R^(A1) represents a hydrogen atom or a methyl group, and a hydrogen atom is more preferable.

In Formula (1-7), R^(A2) is a group represented by any one of Formula (F-1), . . . , or Formula (F-5), and preferred aspects of these groups are as described above.

[Specific Substituent]

The specific resin preferably has at least one group selected from the group consisting of a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, and an amino group, and more preferably has a hydroxy group or a carboxy group. As the above-described hydroxy group, a phenolic hydroxy group is preferable.

For example, by introducing, into the specific resin, the above-described repeating unit represented by Formula (1-1-2), the above-described repeating unit represented by Formula (1-2-2), or the like, these groups are introduced into the specific resin.

[Acid Group]

From the viewpoint of improving alkali developability, the specific resin preferably has an acid group. Examples of the acid group include a phenolic hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, an active imide group, and a sulfonamide group.

From the viewpoint of improving film-forming properties and alkali developability, the acid value of the specific resin is preferably 0 to 500 mgKOH/g.

The lower limit of the above-described acid value is preferably 20 mgKOH/g or more, more preferably 30 mgKOH/g or more, and still more preferably 50 mgKOH/g or more.

The upper limit of the above-described acid value is preferably 300 mgKOH/g or less, more preferably 200 mgKOH/g or less, and still more preferably 150 mgKOH/g or less.

The acid value of the specific resin is calculated by the same method as a measuring method in Examples described later.

[Ethylenically Unsaturated Bond]

The specific resin preferably has an ethylenically unsaturated bond.

In addition, the specific resin preferably includes a group having an ethylenically unsaturated bond.

Examples of the group having an ethylenically unsaturated bond include an acryloyl group, an acryloyloxy group, an acrylamide group, a vinylphenyl group, and an allyl group, and from the viewpoint of reactivity, an acryloyloxy group is preferable.

For example, by introducing, into the specific resin, a repeating unit which is the above-described repeating unit represented by Formula (1-1-2) or repeating unit represented by Formula (1-2-2) and has a group represented by Formula (F-2) or Formula (F-3) described above, or the like, the group having an ethylenically unsaturated bond is introduced into the specific resin.

From the viewpoint of storage stability and curability, the C═C value of the specific resin is preferably 0 to 5 mmol/g.

The lower limit of the above-described C═C value is preferably 0.01 mmol/g or more, more preferably 0.03 mmol/g or more, still more preferably 0.05 mmol/g or more, and particularly preferably 0.1 mmol/g or more.

The upper limit of the above-described C═C value is preferably 3 mmol/g or less, more preferably 2 mmol/g or less, still more preferably 1.5 mmol/g or less, and particularly preferably 1 mmol/g or less.

In the present invention, the C═C value of the specific resin refers to the number of ethylenically unsaturated bonds included in 1 g of the specific resin, and is a value measured by the method in Examples described later.

[Graft Polymer and Star Polymer]

The specific resin may be any of a linear polymer, a star polymer, or a graft polymer compound. In addition, the specific resin may be a star polymer having a specific terminal group described in JP2007-277514A and the like, which has a plurality of branching points, but is preferably a graft polymer or a star polymer.

—Graft Polymer—

In a case where the specific resin is a graft polymer, the specific resin preferably has, as a graft chain, a molecular chain described later, which has a molecular weight of 1,000 to 10,000 and does not have an acid group and a basic group.

In addition, in a case where the specific resin is a graft polymer, the specific resin preferably has, as a main chain, a repeating unit which is represented by Formula (1-1-3) described above and has a group represented by Formula (F-4) or Formula (F-5) described above, or a repeating unit which is represented by Formula (1-2-3) described and has a group represented by Formula (F-4) or Formula (F-5) described above. In this case, it is preferable that the group represented by Formula (F-4) or Formula (F-5) is a graft chain in the graft polymer.

—Star Polymer—

In a case where the specific resin is a star polymer, the specific resin is preferably a resin represented by Formula (S-1).

In Formula (S-1), R¹ represents an (m+n1)-valent organic linking group, R²'s each independently represent a single bond or an (n2+1)-valent linking group, A¹'s each independently represent at least one group selected from the group consisting of a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, and an amino group, R³'s each independently represent a single bond or an (n2+1)-valent linking group, P¹'s each independently represent a polymer chain, m represents an integer of 1 to 8, n1 represents an integer of 2 to 9, m+n1 is 3 to 10, n2 is an integer of 1 or more, and the proportion of the total amount of repeating units represented by any one of Formula (1-1), . . . , or Formula (1-5) with respect to the total molar amount of all repeating units included in the resin represented by Formula (S-1) exceeds 60 mol %.

—R¹—

In Formula (S-1), R¹ is preferably a group composed of 1 to 100 carbon atoms, 0 to 10 nitrogen atoms, 0 to 50 oxygen atoms, 1 to 200 hydrogen atoms, and 0 to 20 sulfur atoms, more preferably a group composed of 1 to 60 carbon atoms, 0 to 10 nitrogen atoms, 0 to 40 oxygen atoms, 1 to 120 hydrogen atoms, and 0 to 10 sulfur atoms, more preferably a group composed of 1 to 50 carbon atoms, 0 to 10 nitrogen atoms, 0 to 30 oxygen atoms, 1 to 100 hydrogen atoms, and 0 to 7 sulfur atoms, and particularly preferably a group composed of 1 to 40 carbon atoms, 0 to 8 nitrogen atoms, 0 to 20 oxygen atoms, 1 to 80 hydrogen atoms, and 0 to 5 sulfur atoms.

—R²—In Formula (S-1), R² is preferably a single bond or a divalent organic linking group composed of 1 to 50 carbon atoms, 0 to 8 nitrogen atoms, 0 to 25 oxygen atoms, 1 to 100 hydrogen atoms, and 0 to 10 sulfur atoms, more preferably a single bond or a divalent organic linking group composed of 1 to 30 carbon atoms, 0 to 6 nitrogen atoms, 0 to 15 oxygen atoms, 1 to 50 hydrogen atoms, and 0 to 7 sulfur atoms, and particularly preferably a single bond or a divalent organic linking group composed of 1 to 10 carbon atoms, 0 to 5 nitrogen atoms, 0 to 10 oxygen atoms, 1 to 30 hydrogen atoms, and 0 to 5 sulfur atoms.

—R³—

In Formula (S-1), R³'s are each independently preferably a single bond, —S—, or the same group as R² described above, more preferably a single bond or —S—, and particularly preferably —S—.

—P¹—

In Formula (S-1), P¹ is preferably a polymer chain including at least one repeating unit selected from the group consisting of repeating units each represented by Formulae (1-1) to (1-7), and more preferably a polymer chain including at least one repeating unit selected from the group consisting of repeating units each represented by Formulae (1-1) to (1-5), and Formula (1-7).

In addition, P¹ preferably includes the repeating unit represented by Formula (1-1-1), the repeating unit represented by Formula (1-2-1), the repeating unit represented by Formula (1-3), the repeating unit represented by Formula (1-4), or the repeating unit represented by Formula (1-5), and more preferably includes the repeating unit represented by Formula (1-1-1) or the repeating unit represented by Formula (1-2-1).

—m, n1, and n2—

In Formula (S-1), m represents an integer of 1 to 8, and is preferably 1 to 5, more preferably 1 to 4, and particularly preferably 2 to 4.

In Formula (S-1), n1 represents an integer of 2 to 9, and is preferably 2 to 8, more preferably 2 to 7, and particularly preferably 2 to 6.

In Formula (S-1), n2 represents an integer of 1 or more, and is preferably 1 or 10, more preferably 1 to 4, and still more preferably 1 or 2.

—Formula (S-2)—

The star polymer represented by Formula (S-1) is preferably a star polymer represented by Formula (S-2).

R¹, A¹, P¹, n¹, n², and m in Formula (S-2) have the same meaning as R¹, A¹, P¹, n¹, n², and m in Formula (S-1), respectively, and the preferred aspects thereof are also the same.

In Formula (S-2), R⁴—S— has the same meaning as R² in Formula (S-1), except that the bonding site with R¹ includes a sulfur atom, and the preferred aspect thereof is also the same.

[Molecular Chain]

The specific resin preferably has a molecular chain having a molecular weight of 1,000 to 10,000 and not having an acid group and a basic group.

The specific resin preferably has the above-described molecular chain as a branched chain.

In a case where the specific resin is a graft polymer, it is preferable that the above-described molecular chain is a graft chain, and it is more preferable that the above-described molecular chain is included as the group which is included in the repeating unit represented by Formula (1-1-3) described above and is represented by Formula (F-4) or Formula (F-5) described above, or a group which is included in the repeating unit represented by Formula (1-2-3) described and is represented by Formula (F-4) or Formula (F-5) described above.

In a case where the specific resin is a star polymer, it is preferable that the above-described molecular chain is included as P¹ in Formula (S-1) described above.

The above-described molecular chain preferably includes at least one selected from the group consisting of a repeating unit derived from a (meth)acrylic acid ester compound, a repeating unit derived from a (meth)acrylamide compound, a repeating unit derived from an aromatic vinyl compound, and a polyester structure.

As the above-described repeating unit derived from a (meth)acrylic acid ester compound, the above-described repeating unit represented by Formula (1-7) is preferable, a repeating unit which is represented by Formula (1-7) described above, in which R^(A2) is a group represented by Formula (F-1), Formula (F-2), or Formula (F-3), is more preferable, and a repeating unit which is represented by Formula (1-7) described above, in which R^(A2) is a group represented by Formula (F-1), is still more preferable.

As the above-described repeating unit derived from a (meth)acrylamide compound, the above-described repeating unit represented by Formula (1-2) is preferable, and the above-described repeating unit represented by Formula (1-2-1) is more preferable.

As the above-described repeating unit derived from an aromatic vinyl compound, the above-described repeating unit represented by Formula (1-1) is preferable, and the above-described repeating unit represented by Formula (1-1-1) is more preferable.

As the above-described polyester structure, a polyester structure represented by Formula (F-5) described above is preferable. The above-described polyester structure is preferably included in the specific resin as the repeating unit which is represented by Formula (1-1-3) described above and has the group represented by Formula (F-5), or the repeating unit which is represented by Formula (1-2-3) described and has the group represented by Formula (F-5).

The coloring resin composition according to the embodiment of the present invention preferably includes, as the specific resin, at least one resin selected from the group consisting of the following resin 1 and the following resin 2, and more preferably includes the resin 1 and the resin 2.

By including the resin 1, developability of the coloring resin composition is improved.

By including the resin 2, storage stability of the coloring resin composition is improved.

Resin 1: a resin which is the specific resin and includes a group having an acid group and an ethylenically unsaturated bond

Resin 2: a resin which is the specific resin, has at least one group selected from the group consisting of a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, and an amino group, and has a molecular chain having a molecular weight of 1,000 to 10,000 and having no acid group

In the above-described resin 1 and resin 2, the acid group, the group having an ethylenically unsaturated bond, the at least one group selected from the group consisting of a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, and an amino group, and the molecular chain which has a molecular weight of 1,000 to 10,000 and does not have an acid group are as described above.

The resin 1 may further have the above-described molecular chain.

In addition, the resin 2 may further have the above-described group having an ethylenically unsaturated bond.

[Molecular Weight]

The weight-average molecular weight (Mw) of the specific resin is preferably 5,000 to 100,000 and more preferably 10,000 to 50,000.

[Molar Absorption Coefficient]

The maximum value of the molar absorption coefficient of the specific resin at a wavelength of 400 to 1100 nm is preferably 0 to 1,000 l/(mol·cm) and more preferably 0 to 100 l/(mol·cm).

[Heat Resistance]

The specific resin preferably has a 5 mass % reduction temperature of 280° C. or higher, more preferably 300° C. or higher, and still more preferably 320° C. or higher by a thermogravimetry/differential thermal analysis (TG/DTA) under a nitrogen atmosphere. The upper limit of the above-described 5 mass % reduction temperature is not particularly limited, and for example, may be 1,000° C. or lower. The 5 mass % reduction temperature is determined by a known TG/DTA measuring method as a temperature at which the mass reduction rate is 5% in a case of being allowed to stand at a specific temperature for 5 hours under a nitrogen atmosphere.

In addition, the specific resin preferably has a mass reduction rate of 10% or less, more preferably 5% or less, and still more preferably 2% or less in a case of being allowed to stand at 300° C. for 5 hours under a nitrogen atmosphere. The lower limit of the above-described mass reduction rate is not particularly limited, and may be 0% or more.

The mass reduction rate is a value calculated as a proportion of mass reduction in the specific resin before and after being allowed to stand at 300° C. for 5 hours under a nitrogen atmosphere.

[Synthesis Method]

A method for synthesizing the specific resin is not particularly limited, and the specific resin can be synthesized by a known method. For example, the specific resin can be synthesized by the method described in Examples described later.

Specific Example

Specific examples of the specific resin are shown below, but the present invention is not limited thereto.

In the following tables, the column of “Item 1” describes a proportion (mol %) of the total amount of repeating units represented by any one of Formula (1-1), . . . , or Formula (1-5) with respect to the total molar amount of all repeating units included in the specific resin, the column of “Item 2” describes a content (mol %) of the repeating unit derived from a (meth)acrylic acid or a (meth)acrylic acid ester compound, the column of “Acid value” describes an acid value (mgKOH/g) of the specific resin, and the column of “C═C value” describes a C═C value (mmol/g) of the specific resin.

In the following chemical formulae, x, y, z, and w represent the content ratio (mol %) of each repeating unit, and can be appropriately set within a range satisfying the item 1, the item 2, the acid value, and the C═C value.

In addition, in the following chemical formulae, for example, the description of “polymer” in (A-22) shows that a polymer chain in which a repeating unit derived from diethylacrylamide and a repeating unit derived from styrene are randomly bonded to a sulfur atom described in (A-22) at a content ratio (molar ratio) of the parenthesized subscript is bonded. The above-described molar ratio can be appropriately set within a range satisfying the item 1, the item 2, the acid value, and the C═C value.

In addition, for example, among six *'s in R of (A-34), two thereof are bonded to the structure shown in square brackets on the left side, and four thereof are bonded to the structure shown in square brackets on the right side. In addition, the description in square brackets on the right side indicates a polymer chain in which a repeating unit derived from methyl vinylbenzoate and a repeating unit derived from butyl acrylate are randomly bonded.

TABLE 1 Item Item Acid C═C Resin 1 2 value value

100 0 0 0

100 0 0 0

80 20 0 0

65 35 0 0

100 0 85 0

100 0 105 0

TABLE 2 Item Item Acid C═C Resin 1 2 value value

65 35 140 0

100 0 115 0

100 0 70 1.5

100 0 85 1.4

90 10 70 0

TABLE 3 Item Item Acid C═C Resin 1 2 value value

73 27 46 1.8

100 0 60 0

100 0 83 0

100 0 45 1.9

100 0 49 1.7

TABLE 4 Item Item Acid C═C Resin 1 2 value value

100 0 100 2.2

100 0 70 1.3

100 0 38 1.0

85 15 46 0

TABLE 5 Item Item Acid C═C Resin 1 2 value value

68 32 60 0

87 13 30 0

100 0 89 0

TABLE 6 Item Item Acid C═C Resin 1 2 value value

100 0 48 0

90 10 70 0.7

TABLE 7 Item Item Acid C═C Resin 1 2 value value

95 5 76 0.6

100 0 50 0.5

TABLE 8 Item Item Acid C≡C Resin 1 2 value value

100 0 57 0.5

100 0 29 0.3

TABLE 9 Item Item Acid C≡C Resin 1 2 value value

85 15 120 0

87 13 66 0

81 19 91 1.8

78 22 77 1.2

TABLE 10 Item Item Acid C≡C Resin 1 2 value value

61 39 22 0

90 10 24 0

100 0 0 0

TABLE 11 Item Item Acid C≡C Resin 1 2 value value

100 0 90 0

95 5 65 1.9

100 0 50 2.0

85 15 50 0.7

[Content]

The content of the specific resin in the coloring resin composition according to the embodiment of the present invention is preferably 10 to 95 mass % with respect to the total solid content of the coloring resin composition. The lower limit is more preferably 20 mass % or more and still more preferably 30 mass % or more. The upper limit is more preferably 90 mass % or less and still more preferably 85 mass % or less.

The coloring resin composition according to the embodiment of the present invention may contain the specific resin alone or in combination of two or more kinds thereof. In a case where two or more kinds of specific resins are used in combination, the total amount thereof is preferably within the above-described range.

In addition, in a case where the coloring resin composition according to the embodiment of the present invention contains the above-described resin 1 as the specific resin, the content of the resin 1 is preferably 1 to 30 mass % with respect to the total solid content of the coloring resin composition. The lower limit is more preferably 3 mass % or more and still more preferably 5 mass % or more. The upper limit is more preferably 25 mass % or less and still more preferably 20 mass % or less.

In addition, in a case where the coloring resin composition according to the embodiment of the present invention contains the above-described resin 2 as the specific resin, the content of the resin 2 is preferably 10 to 60 mass % with respect to the total solid content of the coloring resin composition. The lower limit is more preferably 15 mass % or more and still more preferably 20 mass % or more. The upper limit is more preferably 55 mass % or less and still more preferably 50 mass % or less.

In addition, in a case where the coloring resin composition according to the embodiment of the present invention contains the above-described resin 2 as the specific resin and includes the pigment as the coloring material, the content of the resin 2 is preferably 25 to 85 mass % with respect to the total mass of the pigment included in the coloring resin composition. The lower limit is more preferably 28 mass % or more and still more preferably 30 mass % or more. The upper limit is more preferably 80 mass % or less and still more preferably 50 mass % or less.

In addition, in the present invention, in the components in which the coloring material is excepted from the total solid content of the coloring resin composition, the specific resin is included preferably in an amount of 20 mass % or more, more preferably in an amount of 30 mass % or more, and still more preferably in an amount of 40 mass % or more. The upper limit may be 100 mass %, 90 mass % or less, or 85 mass % or less. In a case where the content of the specific resin is within the above-described range, it is easy to form a film having excellent heat resistance, and it is easy to suppress film contraction after heating. Further, in a case where an inorganic film is formed on a surface of the film obtained using the coloring resin composition according to the embodiment of the present invention, it is also possible to suppress the occurrence of cracks in the inorganic film even in a case where this laminate is exposed to a high temperature.

In addition, the total content of the coloring material and the above-described resin A in the total solid content of the coloring resin composition is preferably 25 to 100 mass %. The lower limit is more preferably 30 mass % or more and still more preferably 40 mass % or more. The upper limit is more preferably 90 mass % or less and still more preferably 80 mass % or less.

<Other Resins>

The coloring resin composition according to the embodiment of the present invention may include other resins.

A compound corresponding to the specific resin does not correspond to the above-described other resins.

In a case where the coloring resin composition according to the embodiment of the present invention includes other resins, it is preferable that the proportion of the total amount of repeating units represented by any one of Formula (1-1), . . . , or Formula (1-5) with respect to the total molar amount of all repeating units included in all resin components included in the coloring resin composition according to the embodiment of the present invention exceeds 60 mol %. The above-described proportion of the total amount is preferably 70 mol % or more and more preferably 80 mol % or more. The upper limit is not particularly limited, and may be 100 mol % or less.

Examples of the other resins include a resin having alkali developability and a resin as a dispersant.

Here, in a case where the coloring resin composition according to the embodiment of the present invention includes other resins, the aspect shown in the following (1) or the following (2) is also preferable.

(1) the above-described resin 1 and the resin as a dispersant are included.

(2) the resin having alkali developability and the above-described resin 2 are included.

In addition, in the aspect of (1), the above-described resin 2 may be further included, and in the aspect of (2), the above-described resin 1 may be further included.

[Resin Having Alkali Developability]

The weight-average molecular weight (Mw) of the resin having alkali developability is preferably 3,000 to 2,000,000. The upper limit is more preferably 1,000,000 or less and still more preferably 500,000 or less. The lower limit is more preferably 4,000 or more and still more preferably 5,000 or more.

Examples of the resin having alkali developability include a (meth)acrylic resin, a polyimine resin, a polyether resin, a polyolefin resin, a cyclic olefin resin, a polyester resin, and a styrene resin, and a (meth)acrylic resin or a polyimine resin is preferable and a (meth)acrylic resin is more preferable. In addition, as the other resin, resins described in paragraph Nos. 0041 to 0060 of JP2017-206689A, resins described in paragraph Nos. 0022 to 0071 of JP2018-010856A, resins described in JP2017-057265A, resins described in JP2017-032685A, resins described in JP2017-075248A, and resins described in JP2017-066240A can also be used.

In addition, as the resin having alkali developability, it is preferable to use a resin having an acid group. According to this aspect, developability of the coloring resin composition can be further improved. Examples of the acid group include a phenolic hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, a phosphonic acid group, an active imide group, and a sulfonamide group, and a carboxy group is preferable. The resin having an acid group can be used, for example, as an alkali-soluble resin.

The resin having an acid group preferably includes a repeating unit having an acid group in the side chain, and more preferably includes 1 to 70 mol % of repeating units having an acid group in the side chain with respect to the total repeating units of the resin. The upper limit of the content of the repeating unit having an acid group in the side chain is preferably 50 mol % or less and more preferably 40 mol % or less. The lower limit of the content of the repeating unit having an acid group in the side chain is preferably 2 mol % or more and more preferably 5 mol % or more.

The acid value of the resin having an acid group is preferably 200 mgKOH/g or less, more preferably 150 mgKOH/g or less, still more preferably 120 mgKOH/g or less, and particularly preferably 100 mgKOH/g or less. In addition, the acid value of the resin having an acid group is preferably 5 mgKOH/g or more, more preferably 10 mgKOH/g or more, and still more preferably 20 mgKOH/g or more.

The resin having an acid group also preferably has an ethylenically unsaturated bond-containing group. Examples of the ethylenically unsaturated bond-containing group include a vinyl group, an allyl group, and a (meth)acryloyl group, and an allyl group or a (meth)acryloyl group is preferable and a (meth)acryloyl group is more preferable.

The resin having an ethylenically unsaturated bond-containing group preferably includes a repeating unit having an ethylenically unsaturated bond-containing group in the side chain, and more preferably includes 5 to 80 mol % of the repeating unit having an ethylenically unsaturated bond-containing group in the side chain with respect to the total repeating units of the resin. The upper limit of the content of the repeating unit having an ethylenically unsaturated bond-containing group in the side chain is preferably 60 mol % or less and more preferably 40 mol % or less. The lower limit of the content of the repeating unit having an ethylenically unsaturated bond-containing group in the side chain is preferably 10 mol % or more and more preferably 15 mol % or more.

It is also preferable that the resin having alkali developability includes a repeating unit derived from a monomer component including a compound represented by Formula (ED1) and/or a compound represented by Formula (ED2) (hereinafter, these compounds may be referred to as an “ether dimer”).

In Formula (ED1), R¹ and R² each independently represent a hydrogen atom or a hydrocarbon group having 1 to 25 carbon atoms, which may have a substituent.

In Formula (ED2), R represents a hydrogen atom or an organic group having 1 to 30 carbon atoms. With regard to details of Formula (ED2), reference can be made to the description in JP2010-168539A, the contents of which are incorporated herein by reference.

With regard to the specific examples of the ether dimer, reference can be made to the description in paragraph No. 0317 of JP2013-029760A, the contents of which are incorporated herein by reference.

It is also preferable that the resin having alkali developability includes a repeating unit derived from a compound represented by Formula (X).

In Formula (X), R₁ represents a hydrogen atom or a methyl group, R₂ represents an alkylene group having 2 to 10 carbon atoms, and R₃ represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms which may include a benzene ring. n represents an integer of 1 to 15.

Examples of the resin having an acid group include a resin having the following structures. In the following structural formulae, Me represents a methyl group.

[Dispersant]

The coloring resin composition according to the embodiment of the present invention can also include a resin as a dispersant. Examples of the dispersant include an acidic dispersant (acidic resin) and a basic dispersant (basic resin). Here, the acidic dispersant (acidic resin) represents a resin in which the amount of the acid group is larger than the amount of the basic group. The acidic dispersant (acidic resin) is preferably a resin in which the amount of the acid group occupies 70 mol % or more in a case where the total amount of the acid group and the basic group is 100 mol %, and more preferably a resin substantially consisting of only an acid group. The acid group included in the acidic dispersant (acidic resin) is preferably a carboxy group. The acid value of the acidic dispersant (acidic resin) is preferably 40 to 105 mgKOH/g, more preferably 50 to 105 mgKOH/g, and still more preferably 60 to 105 mgKOH/g. In addition, the basic dispersant (basic resin) represents a resin in which the amount of the basic group is larger than the amount of the acid group. The basic dispersant (basic resin) is preferably a resin in which the amount of the basic group is more than 50 mol % in a case where the total amount of the acid group and the basic group is 100 mol %. The basic group included in the basic dispersant is preferably an amino group.

The resin used as a dispersant preferably includes a repeating unit having an acid group.

It is also preferable that the resin used as a dispersant is a graft resin. Examples of the graft resin include resins described in paragraph Nos. 0025 to 0094 of JP2012-255128A, the contents of which are incorporated herein by reference.

It is also preferable that the resin used as a dispersant is a polyimine-based dispersant (polyimine resin) including a nitrogen atom in at least one of the main chain or the side chain. As the polyimine-based dispersant, a resin having a main chain which has a partial structure having a functional group of pKa 14 or less, and a side chain which has 40 to 10000 atoms, in which at least one of the main chain or the side chain has a basic nitrogen atom, is preferable. The basic nitrogen atom is not particularly limited as long as it is a nitrogen atom exhibiting basicity. Examples of the polyimine-based dispersant include resins described in paragraph Nos. 0102 to 0166 of JP2012-255128A, the contents of which are incorporated herein by reference.

It is also preferable that the resin used as a dispersant is a resin having a structure in which a plurality of polymer chains are bonded to a core portion. Examples of such a resin include dendrimers (including star polymers). In addition, specific examples of the dendrimer include polymer compounds C-1 to C-31 described in paragraph Nos. 0196 to 0209 of JP2013-043962A.

A commercially available product is also available as the dispersant, and specific examples thereof include DISPERBYK series (for example, DISPERBYK-111, 161, and the like) manufactured by BYK Chemie, and Solsperse series (for example, Solsperse 36000) manufactured by Lubrizol Corporation. The dispersing agents described in paragraph Nos. 0041 to 0130 of JP2014-130338A can also be used, the contents of which are incorporated herein by reference. In addition, as the dispersant, compounds described in JP2018-150498A, JP2017-100116A, JP2017-100115A, JP2016-108520A, JP2016-108519A, and JP2015-232105A may be used.

The resin described as a dispersant can be used for an application other than the dispersant. For example, the resin can also be used as a binder.

The content of the total resin component in the total solid content of the coloring resin composition is preferably 10 to 95 mass %. The lower limit is more preferably 20 mass % or more and still more preferably 30 mass % or more. The upper limit is more preferably 90 mass % or less and still more preferably 85 mass % or less.

In addition, in the coloring resin composition, the content of the other resins described above is preferably 230 parts by mass or less, more preferably 200 parts by mass or less, and still more preferably 150 parts by mass or less with respect to 100 parts by mass of the above-described specific resin. The lower limit may be 0 part by mass, 5 parts by mass or more, or 10 parts by mass or more. In addition, it is also preferable that the coloring resin composition does not substantially include the above-described other resins. According to this aspect, it is easy to form a film having more excellent heat resistance. The case where the resin composition does not substantially include the other resin means that the content of the other resin in the total solid content of the resin composition is 0.1 mass % or less, preferably 0.05 mass % or less, and more preferably 0 mass %.

<Organic Solvent>

The coloring resin composition according to the embodiment of the present invention contains an organic solvent. Basically, the organic solvent is not particularly limited as long as it satisfies the solubility of the respective components and the application properties of the coloring resin composition. Examples of the organic solvent include an ester-based solvent, a ketone-based solvent, an alcohol-based solvent, an amide-based solvent, an ether-based solvent, and a hydrocarbon-based solvent. With regard to details thereof, reference can be made to the description in paragraph No. 0223 of WO2015/166779A, the contents of which are incorporated herein by reference. In addition, an ester-based solvent in which a cyclic alkyl group is substituted or a ketone solvent in which a cyclic alkyl group is substituted can also be preferably used. Specific examples of the organic solvent include polyethylene glycol monomethyl ether, dichloromethane, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, ethyl cellosolve acetate, ethyl lactate, diethylene glycol dimethyl ether, butyl acetate, methyl 3-methoxypropionate, 2-heptanone, cyclohexanone, cyclohexyl acetate, cyclopentanone, ethyl carbitol acetate, butyl carbitol acetate, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, 3-methoxy-N,N-dimethylpropanamide, 3-butoxy-N,N-dimethylpropanamide, γ-butyrolactone, and N-methyl-2-pyrrolidone. In this case, it may be preferable that the content of aromatic hydrocarbons (such as benzene, toluene, xylene, and ethylbenzene) as the organic solvent is low (for example, 50 parts per million (ppm) by mass or less, 10 ppm by mass or less, or 1 ppm by mass or less with respect to the total amount of the organic solvent) in consideration of environmental aspects and the like.

In the present invention, an organic solvent having a low metal content is preferably used. For example, the metal content in the organic solvent is preferably 10 mass parts per billion (ppb) or less. Optionally, an organic solvent having a metal content at a mass parts per trillion (ppt) level may be used. For example, such an organic solvent is available from Toyo Gosei Co., Ltd. (The Chemical Daily, Nov. 13, 2015). Examples of a method for removing impurities such as a metal from the organic solvent include distillation (such as molecular distillation and thin-film distillation) and filtration using a filter. The filter pore size of the filter used for the filtration is preferably 10 μm or less, more preferably 5 μm or less, and still more preferably 3 μm or less. As a material of the filter, polytetrafluoroethylene, polyethylene, or nylon is preferable.

The organic solvent may include an isomer (a compound having the same number of atoms and a different structure). In addition, only one kind of isomers may be included, or a plurality of isomers may be included.

The organic solvent preferably has the content of peroxides of 0.8 mmol/L or less, and more preferably, the organic solvent does not substantially include peroxides.

The content of the organic solvent in the coloring resin composition is preferably 10 to 95 mass %, more preferably 20 to 90 mass %, and still more preferably 30 to 90 mass %.

<Pigment Derivative>

The coloring resin composition according to the embodiment of the present invention can contain a pigment derivative. Examples of the pigment derivative include a compound having a structure in which a part of a chromophore is substituted with an acid group, a basic group, or a phthalimidomethyl group. Examples of the chromophore constituting the pigment derivative include a quinoline skeleton, a benzimidazolone skeleton, a diketopyrrolopyrrole skeleton, an azo skeleton, a phthalocyanine skeleton, an anthraquinone skeleton, a quinacridone skeleton, a dioxazine skeleton, a perinone skeleton, a perylene skeleton, a thioindigo skeleton, an isoindoline skeleton, an isoindolinone skeleton, a quinophthalone skeleton, a threne skeleton, and a metal complex skeleton. Among these, a quinoline skeleton, a benzimidazolone skeleton, a diketopyrrolopyrrole skeleton, an azo skeleton, a quinophthalone skeleton, an isoindoline skeleton, or a phthalocyanine skeleton is preferable, and an azo skeleton or a benzimidazolone skeleton is more preferable. As the acid group included in the pigment derivative, a sulfo group or a carboxy group is preferable and a sulfo group is more preferable. As the basic group included in the pigment derivative, an amino group is preferable and a tertiary amino group is more preferable.

As the pigment derivative, a pigment derivative having excellent visible light transparency (hereinafter, also referred to as a transparent pigment derivative) can be used. The maximum value (εmax) of the molar absorption coefficient of the transparent pigment derivative in a wavelength region of 400 to 700 nm is preferably 3000 L·mol⁻¹·cm⁻¹ or less, more preferably 1000 L·mol⁻¹·cm⁻¹ or less, and still more preferably 100 L·mol⁻¹·cm⁻¹ or less. The lower limit of εmax is, for example, 1 L·mol⁻¹·cm⁻¹ or more and may be 10 L·mol⁻¹·cm⁻¹ or more.

Specific examples of the pigment derivative include compounds described in JP1981-118462A (JP-556-118462A), JP1988-264674A (JP-563-264674A), JP1989-217077A (JP-H01-217077A), JP1991-009961A (JP-H03-009961A), JP1991-026767A (JP-H03-026767A), JP1991-153780A (JP-H03-153780A), JP1991-045662A (JP-H03-045662A), JP1992-285669A (JP-H04-285669A), JP1994-145546A (JP-H06-145546A), JP1994-212088A (JP-H06-212088A), JP1994-240158A (JP-H06-240158A), JP1998-030063A (JP-H10-030063A), JP1998-195326A (JP-H10-195326A), paragraph Nos. 0086 to 0098 of WO2011/024896A, paragraph Nos. 0063 to 0094 of WO2012/102399A, paragraph No. 0082 of WO2017/038252A, paragraph No. 0171 of JP2015-151530A, paragraph Nos. 0162 to 0183 of JP2011-252065A, JP2003-081972A, JP5299151B, JP2015-172732A, JP2014-199308A, JP2014-085562A, JP2014-035351A, JP2008-081565A, and JP2019-109512A.

The content of the pigment derivative is preferably 1 to 30 parts by mass and still more preferably 3 to 20 parts by mass with respect to 100 parts by mass of the pigment. The pigment derivative may be used singly or in combination of two or more kinds thereof

<Polymerizable Compound>

The coloring resin composition according to the embodiment of the present invention can contain a polymerizable compound. The polymerizable compound is preferably, for example, a compound having an ethylenically unsaturated bond-containing group. Examples of the ethylenically unsaturated bond-containing group include a vinyl group, a (meth)allyl group, and a (meth)acryloyl group. The polymerizable compound used in the present invention is preferably a radically polymerizable compound.

Any chemical forms of a monomer, a prepolymer, an oligomer, or the like may be used as the polymerizable compound, but a monomer is preferable. The molecular weight of the polymerizable compound is preferably 100 to 3000. The upper limit is more preferably 2000 or less and still more preferably 1500 or less. The lower limit is more preferably 150 or more and still more preferably 250 or more.

The polymerizable compound is preferably a compound including 3 or more ethylenically unsaturated bond-containing groups, more preferably a compound including 3 to 15 ethylenically unsaturated bond-containing groups, and still more preferably a compound including 3 to 6 ethylenically unsaturated bond-containing groups. In addition, the polymerizable compound is preferably a trifunctional to pentadecafunctional (meth)acrylate compound and more preferably a trifunctional to hexafunctional (meth)acrylate compound. Specific examples of the polymerizable compound include the compounds described in paragraph Nos. 0095 to 0108 of JP2009-288705A, paragraph No. 0227 of JP2013-029760A, paragraph Nos. 0254 to 0257 of JP2008-292970A, paragraph Nos. 0034 to 0038 of JP2013-253224A, paragraph No. 0477 of JP2012-208494A, JP2017-048367A, JP6057891B, JP6031807B, and JP2017-194662A, the contents of which are incorporated herein by reference.

As the polymerizable compound, dipentaerythritol triacrylate (as a commercially available product, KAYARAD D-330 manufactured by Nippon Kayaku Co., Ltd.), dipentaerythritol tetraacrylate (as a commercially available product, KAYARAD D-320 manufactured by Nippon Kayaku Co., Ltd.), dipentaerythritol penta(meth)acrylate (as a commercially available product, KAYARAD D-310 manufactured by Nippon Kayaku Co., Ltd.), dipentaerythritol hexa(meth)acrylate (as a commercially available product, KAYARAD DPHA manufactured by Nippon Kayaku Co., Ltd., NK ESTER A-DPH-12E manufactured by Shin-Nakamura Chemical Co., Ltd.), or a compound having a structure in which these (meth)acryloyl groups are bonded through an ethylene glycol and/or a propylene glycol residue (for example, SR454 and SR499 which are commercially available products from Sartomer) is preferable. In addition, as the polymerizable compound, diglycerin ethylene oxide (EO)-modified (meth)acrylate (as a commercially available product, M-460 manufactured by TOAGOSEI CO., LTD.), pentaerythritol tetraacrylate (NK ESTER A-TMMT manufactured by Shin-Nakamura Chemical Co., Ltd.), 1,6-hexanediol diacrylate (KAYARAD HDDA manufactured by Nippon Kayaku Co., Ltd.), RP-1040 (manufactured by Nippon Kayaku Co., Ltd.), ARONIX TO-2349 (manufactured by TOAGOSEI CO., LTD.), NK OLIGO UA-7200 (manufactured by Shin-Nakamura Chemical Co., Ltd.), 8UH-1006 and 8UH-1012 (manufactured by Taisei Fine Chemical Co., Ltd.), Light Acrylate POB-A0 (manufactured by KYOEISHA CHEMICAL Co., Ltd.), and the like can also be used.

In addition, as the polymerizable compound, it is also preferable to use a trifunctional (meth)acrylate compound such as trimethylolpropane tri(meth)acrylate, trimethylolpropane propyleneoxide-modified tri(meth)acrylate, trimethylolpropane ethyleneoxide-modified tri(meth)acrylate, isocyanuric acid ethyleneoxide-modified tri(meth)acrylate, and pentaerythritol tri(meth)acrylate. Examples of a commercially available product of the trifunctional (meth)acrylate compound include ARONIX M-309, M-310, M-321, M-350, M-360, M-313, M-315, M-306, M-305, M-303, M-452, and M-450 (manufactured by TOAGOSEI CO., LTD.), NK ESTER A9300, A-GLY-9E, A-GLY-20E, A-TMM-3, A-TMM-3L, A-TMM-3LM-N, A-TMPT, and TMPT (manufactured by Shin-Nakamura Chemical Co., Ltd.), and KAYARAD GPO-303, TMPTA, THE-330, TPA-330, and PET-30 (manufactured by Nippon Kayaku Co., Ltd.).

As the polymerizable compound, a compound having an acid group can also be used. By using a polymerizable compound having an acid group, the polymerizable compound in a non-exposed portion is easily removed during development and the generation of the development residue can be suppressed. Examples of the acid group include a carboxy group, a sulfo group, and a phosphoric acid group, and a carboxy group is preferable. Examples of a commercially available product of the polymerizable compound having an acid group include ARONIX M-305, M-510, M-520, and ARONIX TO-2349 (manufactured by TOAGOSEI CO., LTD.). The acid value of the polymerizable compound having an acid group is preferably 0.1 to 40 mgKOH/g and more preferably 5 to 30 mgKOH/g. In a case where the acid value of the polymerizable compound is 0.1 mgKOH/g or more, solubility in a developer is good, and in a case where the acid value of the polymerizable compound is 40 mgKOH/g or less, it is advantageous in production and handling.

The polymerizable compound is preferably a compound having a caprolactone structure. Examples of the polymerizable compound having a caprolactone structure include DPCA-20, DPCA-30, DPCA-60, and DPCA-120, each of which is commercially available as KAYARAD DPCA series from Nippon Kayaku Co., Ltd.

As the polymerizable compound, a polymerizable compound having an alkyleneoxy group can also be used. The polymerizable compound having an alkyleneoxy group is preferably a polymerizable compound having an ethyleneoxy group and/or a propyleneoxy group, more preferably a polymerizable compound having an ethyleneoxy group, and still more preferably a trifunctional to hexafunctional (meth)acrylate compound having 4 to 20 ethyleneoxy groups. Examples of a commercially available product of the polymerizable compound having an alkyleneoxy group include SR-494 manufactured by Sartomer, which is a tetrafunctional (meth)acrylate having 4 ethyleneoxy groups, and KAYARAD TPA-330 manufactured by Nippon Kayaku Co., Ltd., which is a trifunctional (meth)acrylate having 3 isobutyleneoxy groups.

As the polymerizable compound, a polymerizable compound having a fluorene skeleton can also be used. Examples of a commercially available product of the polymerizable compound having a fluorene skeleton include OGSOL EA-0200, EA-0300 (manufactured by Osaka Gas Chemicals Co., Ltd., (meth)acrylate monomer having a fluorene skeleton).

As the polymerizable compound, it is also preferable to use a compound which does not substantially include environmentally regulated substances such as toluene. Examples of a commercially available product of such a compound include KAYARAD DPHA LT and KAYARAD DPEA-12 LT (manufactured by Nippon Kayaku Co., Ltd.).

The urethane acrylates described in JP1973-041708B (JP-S48-041708B), JP1976-037193A (JP-S51-037193A), JP1990-032293B (JP-H02-032293B), or JP1990-016765B (JP-H02-016765B), or the urethane compounds having an ethylene oxide skeleton described in JP1983-049860B (JP-S58-049860B), JP1981-017654B (JP-S56-017654B), JP1987-039417B (JP-S62-039417B), or JP1987-039418B (JP-S62-039418B) are also suitable as the polymerizable compound. In addition, the polymerizable compounds having an amino structure or a sulfide structure in the molecule, described in JP1988-277653A (JP-S63-277653A), JP1988-260909A (JP-S63-260909A), or JP1989-105238A (JP-H01-105238A), are also preferably used. In addition, as the polymerizable compound, commercially available products such as UA-7200 (manufactured by Shin-Nakamura Chemical Co., Ltd.), DPHA-40H (manufactured by Nippon Kayaku Co., Ltd.), and UA-306H, UA-306T, UA-3061, AH-600, T-600, AI-600, and LINC-202UA (manufactured by KYOEISHA CHEMICAL Co., Ltd.) can also be used.

In a case of containing a polymerizable compound, the content of the polymerizable compound in the total solid content of the coloring resin composition is preferably 0.1 to 50 mass %. The lower limit is more preferably 0.5 mass % or more and still more preferably 1 mass % or more. The upper limit is more preferably 45 mass % or less and still more preferably 40 mass % or less. The polymerizable compound may be used singly or in combination of two or more kinds thereof

<Photopolymerization Initiator>

The coloring resin composition according to the embodiment of the present invention can contain a photopolymerization initiator. The photopolymerization initiator is not particularly limited, and can be appropriately selected from known photopolymerization initiators. For example, a compound having photosensitivity to light in a range from an ultraviolet ray range to a visible range is preferable. The photopolymerization initiator is preferably a photoradical polymerization initiator.

Examples of the photopolymerization initiator include a halogenated hydrocarbon derivative (for example, a compound having a triazine skeleton, a compound having an oxadiazole skeleton, a compound having an imidazole skeleton, and the like), an acylphosphine compound, a hexaarylbiimidazole, an oxime compound, an organic peroxide, a thio compound, a ketone compound, an aromatic onium salt, an α-hydroxyketone compound, and an α-aminoketone compound. From the viewpoint of exposure sensitivity, as the photopolymerization initiator, a trihalomethyltriazine compound, a biimidazole compound, a benzyldimethylketal compound, an α-hydroxyketone compound, an α-aminoketone compound, an acylphosphine compound, a phosphine oxide compound, a metallocene compound, an oxime compound, a triarylimidazole dimer, an onium compound, a benzothiazole compound, a benzophenone compound, an acetophenone compound, a cyclopentadiene-benzene-iron complex, a halomethyl oxadiazole compound, or a 3-aryl-substituted coumarin compound is preferable, a compound selected from a biimidazole compound, an oxime compound, an a-hydroxyketone compound, an α-aminoketone compound, or an acylphosphine compound is more preferable, and an oxime compound is still more preferable. Examples of the photopolymerization initiator include compounds described in paragraphs 0065 to 0111 of JP2014-130173A, and JP6301489B, the contents of which are incorporated herein by reference.

Examples of the biimidazole compound include 2,2-bis(2-chlorophenyl)-4,4′,5,5′-tetraphenylbiimidazole, 2,2′-bis(o-chlorophenyl)-4,4′,5,5-tetrakis(3,4,5-trimethoxyphenyl)-1,2′-biimidazole, 2,2′-bis(2,3-dichlorophenyl)-4,4′,5,5′-tetraphenylbiimidazole, and 2,2’-bis (o-chlorophenyl)-4,4,5,5′-tetraphenyl-1,2′-biimidazole. Examples of a commercially available product of the α-hydroxyketone compound include Omnirad 184, Omnirad 1173, Omnirad 2959, and Omnirad 127 (all of which are manufactured by IGM Resins B.V.), Irgacure 184, Irgacure 1173, Irgacure 2959, and Irgacure 127 (all of which are manufactured by BASF). Examples of a commercially available product of the α-aminoketone compound include Omnirad 907, Omnirad 369, Omnirad 369E, and Omnirad 379EG (all of which are manufactured by IGM Resins RV), Irgacure 907, Irgacure 369, Irgacure 369E, and Irgacure 379EG (all of which are manufactured by BASF). Examples of a commercially available product of the acylphosphine compound include Omnirad 819 and Omnirad TPO (both of which are manufactured by IGM Resins B.V.), Irgacure 819 and Irgacure TPO (both of which are manufactured by BASF).

Examples of the oxime compound include the compounds described in JP2001-233842A, the compounds described in JP2000-080068A, the compounds described in JP2006-342166A, the compounds described in J. C. S. Perkin II (1979, pp. 1653-1660), the compounds described in J. C. S. Perkin II (1979, pp. 156-162), the compounds described in Journal of Photopolymer Science and Technology (1995, pp. 202-232), the compounds described in JP2000-066385A, the compounds described in JP2004-534797A, the compounds described in JP2006-342166A, the compounds described in JP2017-019766A, the compounds described in JP6065596B, the compounds described in WO2015/152153A, the compounds described in WO2017/051680A, the compounds described in JP2017-198865A, the compounds described in paragraph Nos. 0025 to 0038 of WO2017/164127A, and the compounds described in WO2013/167515A. Specific examples of the oxime compound include 3-benzoyloxyiminobutane-2-one, 3-acetoxyiminobutane-2-one, 3-propionyloxyiminobutane-2-one, 2-acetoxyiminopentane-3-one, 2-acetoxyimino-1-phenylpropane-1-one, 2-benzoyloxyimino-1-phenylpropane-1-one, 3-(4-toluene sulfonyloxy)iminobutane-2-one, and 2-ethoxycarbonyloxyimino-1-phenylpropane-1-one. Examples of a commercially available product thereof include Irgacure OXE01, Irgacure OXE02, Irgacure OXE03, and Irgacure OXE04 (all of which are manufactured by BASF), TR-PBG-304 (manufactured by TRONLY), and ADEKA OPTOMER N-1919 (manufactured by ADEKA Corporation; photopolymerization initiator 2 described in JP2012-014052A). In addition, as the oxime compound, it is also preferable to use a compound having no colorability or a compound having high transparency and being resistant to discoloration. Examples of a commercially available product include ADEKA ARKLS NCI-730, NCI-831, and NCI-930 (all of which are manufactured by ADEKA Corporation).

An oxime compound having a fluorene ring can also be used as the photopolymerization initiator. Specific examples of the oxime compound having a fluorene ring include the compounds described in JP2014-137466A.

In addition, as the photopolymerization initiator, an oxime compound having a skeleton in which at least one benzene ring of a carbazole ring is a naphthalene ring can also be used. Specific examples of such an oxime compound include the compounds described in WO2013/083505A.

An oxime compound having a fluorine atom can also be used as the photopolymerization initiator. Specific examples of the oxime compound having a fluorine atom include the compounds described in JP2010-262028A, the compounds 24, and 36 to 40 described in JP2014-500852A, and the compound (C-3) described in JP2013-164471A.

As the photopolymerization initiator, an oxime compound in which a substituent having a hydroxy group is bonded to a carbazole skeleton can also be used. Examples of such a photopolymerization initiator include compounds described in WO2019/088055A.

An oxime compound having a nitro group can be used as the photopolymerization initiator. It is preferable that the oxime compound having a nitro group is a dimer. Specific examples of the oxime compound having a nitro group include the compounds described in paragraph Nos. 0031 to 0047 of JP2013-114249A and paragraph Nos. 0008 to 0012 and 0070 to 0079 of JP2014-137466A, the compounds described in paragraph Nos. 0007 to 0025 of JP4223071B, and ADEKA ARKLS NCI-831 (manufactured by ADEKA Corporation).

An oxime compound having a benzofuran skeleton can also be used as the photopolymerization initiator. Specific examples thereof include 0E-01 to 0E-75 described in WO2015/036910A.

Specific examples of the oxime compound are shown below, but the present invention is not limited thereto.

The oxime compound is preferably a compound having a maximal absorption wavelength in a wavelength range of 350 to 500 nm and more preferably a compound having a maximal absorption wavelength in a wavelength range of 360 to 480 nm. In addition, from the viewpoint of sensitivity, the molar absorption coefficient of the oxime compound at a wavelength of 365 nm or 405 nm is preferably high, more preferably 1000 to 300000, still more preferably 2000 to 300000, and particularly preferably 5000 to 200000. The molar absorption coefficient of a compound can be measured using a known method. For example, it is preferable that the molar absorption coefficient can be measured using a spectrophotometer (Cary-5 spectrophotometer, manufactured by Varian Medical Systems, Inc.) and ethyl acetate at a concentration of 0.01 g/L.

As the photopolymerization initiator, a bifunctional or tri- or higher functional photoradical polymerization initiator may be used. By using such a photoradical polymerization initiator, two or more radicals are generated from one molecule of the photoradical polymerization initiator, and as a result, good sensitivity is obtained. In addition, in a case of using a compound having an asymmetric structure, crystallinity is reduced so that solubility in a solvent or the like is improved, precipitation is to be difficult over time, and temporal stability of the coloring resin composition can be improved. Specific examples of the bifunctional or tri- or higher functional photoradical polymerization initiator include dimers of the oxime compounds described in JP2010-527339A, JP2011-524436A, WO2015/004565A, paragraph Nos. 0407 to 0412 of JP2016-532675A, and paragraph Nos. 0039 to 0055 of WO2017/033680A; the compound (E) and compound (G) described in JP2013-522445A; Cmpd 1 to 7 described in WO2016/034963A; the oxime ester photoinitiators described in paragraph No. 0007 of JP2017-523465A; the photoinitiators described in paragraph Nos. 0020 to 0033 of JP2017-167399A; the photopolymerization initiator (A) described in paragraph Nos. 0017 to 0026 of JP2017-151342A; and the oxime compound described in JP6469669B.

In a case of containing a photopolymerization initiator, the content of the photopolymerization initiator in the total solid content of the coloring resin composition is preferably 0.1 to 30 mass %. The lower limit is preferably 0.5 mass % or more and more preferably 1 mass % or more. The upper limit is preferably 20 mass % or less and more preferably 15 mass % or less. The photopolymerization initiator may be used singly or in combination of two or more kinds thereof

<Silane Coupling Agent>

The coloring resin composition according to the embodiment of the present invention can contain a silane coupling agent. In the present invention, the silane coupling agent means a silane compound having a hydrolyzable group and other functional groups. In addition, the hydrolyzable group refers to a substituent directly linked to a silicon atom and capable of forming a siloxane bond due to at least one of a hydrolysis reaction or a condensation reaction. Examples of the hydrolyzable group include a halogen atom, an alkoxy group, and an acyloxy group, and an alkoxy group is preferable. That is, it is preferable that the silane coupling agent is a compound having an alkoxysilyl group. Examples of the functional group other than the hydrolyzable group include a vinyl group, a (meth)allyl group, a (meth)acryloyl group, a mercapto group, an epoxy group, an oxetanyl group, an amino group, a ureido group, a sulfide group, an isocyanate group, and a phenyl group, and an amino group, a (meth)acryloyl group, or an epoxy group is preferable. Specific examples of the silane coupling agent include the compounds described in paragraph Nos. 0018 to 0036 of JP2009-288703A and the compounds described in paragraph Nos. 0056 to 0066 of JP2009-242604A, the contents of which are incorporated herein by reference.

The content of the silane coupling agent in the total solid content of the coloring resin composition is preferably 0.1 to 5 mass %. The upper limit is preferably 3 mass % or less and more preferably 2 mass % or less. The lower limit is preferably 0.5 mass % or more and more preferably 1 mass % or more. The silane coupling agent may be used singly or in combination of two or more kinds thereof

<Curing Accelerator>

For the purpose of promoting the reaction of the resin and the polymerizable compound and lowering the curing temperature, the coloring resin composition according to the embodiment of the present invention can further contain a curing accelerator. As the curing accelerator, a methylol-based compound (for example, the compounds exemplified as a crosslinking agent in paragraph No. 0246 of JP2015-034963A), amines, phosphonium salts, amidine salts, and amide compounds (each of which is the curing agent described in, for example, paragraph No. 0186 of JP2013-041165A), base generators (for example, the ionic compounds described in JP2014-055114A), cyanate compounds (for example, the compounds described in paragraph No. 0071 of JP2012-150180A), alkoxysilane compounds (for example, the alkoxysilane compounds having an epoxy group, described in JP2011-253054A), onium salt compounds (for example, the compounds exemplified as an acid generator in paragraph No. 0216 of JP2015-034963A, and the compounds described in JP2009-180949A), or the like can also be used.

In a case where the coloring resin composition according to the embodiment of the present invention contains a curing accelerator, the content of the curing accelerator is preferably 0.3 to 8.9 mass % and more preferably 0.8 to 6.4 mass % with respect to the total solid content of the coloring resin composition.

<Polymerization Inhibitor>

The coloring resin composition according to the embodiment of the present invention can contain a polymerization inhibitor. Examples of the polymerization inhibitor include hydroquinone, p-methoxyphenol, di-tert-butyl-p-cresol, pyrogallol, tert-butyl catechol, benzoquinone, 4,4′-thiobis(3-methyl-6-tert-butylphenol), 2,2′-methylenebis(4-methyl-6-t-butylphenol), and an N-nitrosophenylhydroxylamine salt (an ammonium salt, a cerous salt, or the like). Among these, p-methoxyphenol is preferable. The content of the polymerization inhibitor in the total solid content of the coloring resin composition is preferably 0.0001 to 5 mass %.

<Surfactant>

The coloring resin composition according to the embodiment of the present invention can contain a surfactant. As the surfactant, various surfactants such as a fluorine-based surfactant, a nonionic surfactant, a cationic surfactant, an anionic surfactant, or a silicon-based surfactant can be used. Examples of the surfactant include surfactants described in paragraph Nos. 0238 to 0245 of WO2015/166779A, the contents of which are incorporated herein by reference.

It is preferable that the surfactant is a fluorine-based surfactant. By containing a fluorine-based surfactant in the coloring resin composition, liquid characteristics (particularly, fluidity) are further improved, and liquid saving properties can be further improved. In addition, it is possible to form a film with a small thickness unevenness.

The fluorine content in the fluorine-based surfactant is suitably 3 to 40 mass %, and more preferably 5 to 30 mass % and particularly preferably 7 to 25 mass %. The fluorine-based surfactant in which the fluorine content is within the above-described range is effective in terms of the evenness of the thickness of the coating film or liquid saving properties and the solubility of the surfactant in the coloring resin composition is also good.

Examples of the fluorine-based surfactant include surfactants described in paragraph Nos. 0060 to 0064 of JP2014-041318A (paragraph Nos 0060 to 0064 of the corresponding WO2014/017669A) and the like, and surfactants described in paragraph Nos 0117 to 0132 of JP2011-132503A, the contents of which are incorporated herein by reference. Examples of a commercially available product of the fluorine-based surfactant include: MEGAFACE F171, F172, F173, F176, F177, F141, F142, F143, F144, R30, F437, F475, F479, F482, F554, F780, EXP, and MFS-330 (all of which are manufactured by DIC Corporation); FLUORAD FC430, FC431, and FC171 (all of which are manufactured by Sumitomo 3M Ltd.); SURFLON S-382, SC-101, SC-103, SC-104, SC-105, SC-1068, SC-381, SC-383, S-393, and KH-40 (all of which are manufactured by Asahi Glass Co., Ltd.); and POLYFOX PF636, PF656, PF6320, PF6520, and PF7002 (all of which are manufactured by OMNOVA Solutions Inc.).

In addition, it is also preferable that a polymer of a fluorine atom-containing vinyl ether compound having a fluorinated alkyl group or a fluorinated alkylene ether group, and a hydrophilic vinyl ether compound is used as the fluorine-based surfactant. With regard to such a fluorine-based surfactant, reference can be made to the description in JP2016-216602A, the contents of which are incorporated herein by reference.

A block polymer can also be used as the fluorine-based surfactant. Examples thereof include the compounds described in JP2011-089090A. As the fluorine-based surfactant, a fluorine-containing polymer compound including a repeating unit derived from a (meth)acrylate compound having a fluorine atom and a repeating unit derived from a (meth)acrylate compound having 2 or more (preferably 5 or more) alkyleneoxy groups (preferably ethyleneoxy groups or propyleneoxy groups) can also be preferably used. The following compounds are also exemplified as the fluorine-based surfactant used in the present invention.

The weight-average molecular weight of the above-described compound is preferably 3000 to 50000, and is, for example, 14000. In the compound, “%” representing the proportion of a repeating unit is mol %.

In addition, as the fluorine-based surfactant, a fluorine-containing polymer having an ethylenically unsaturated bond-containing group in the side chain can be used. Specific examples thereof include the compounds described in paragraph Nos. 0050 to 0090 and paragraph Nos. 0289 to 0295 of JP2010-164965A, and for example, MEGAFACE RS-101, RS-102, RS-718K, and RS-72-K manufactured by DIC Corporation. As the fluorine-based surfactant, the compounds described in paragraph Nos. 0015 to 0158 of JP2015-117327A can also be used.

The content of the surfactant in the total solid content of the coloring resin composition is preferably 0.001 mass % to 5.0 mass % and more preferably 0.005 to 3.0 mass %. The surfactant may be used singly or in combination of two or more kinds thereof. In a case of using two or more kinds thereof, the total amount thereof is preferably within the above-described range.

<Ultraviolet Absorber>

The coloring resin composition according to the embodiment of the present invention can contain an ultraviolet absorber. As the ultraviolet absorber, a conjugated diene compound, an aminodiene compound, a salicylate compound, a benzophenone compound, a benzotriazole compound, an acrylonitrile compound, a hydroxyphenyltriazine compound, an indole compound, a triazine compound, or the like can be used. With regard to details thereof, reference can be made to the description in paragraph Nos. 0052 to 0072 of JP2012-208374A, paragraph Nos. 0317 to 0334 of JP2013-068814A, and paragraph Nos. 0061 to 0080 of JP2016-162946A, the contents of which are incorporated herein by reference. Examples of a commercially available product of the ultraviolet absorber include UV-503 (manufactured by Daito Chemical Co., Ltd.). In addition, examples of the benzotriazole compound include MYUA series manufactured by Miyoshi Oil & Fat Co., Ltd. (The Chemical Daily, Feb. 1, 2016). In addition, as the ultraviolet absorber, compounds described in paragraph Nos. 0049 to 0059 of JP6268967B can also be used. The content of the ultraviolet absorber in the total solid content of the coloring resin composition is preferably 0.01 to 10 mass % and more preferably 0.01 to 5 mass %. The ultraviolet absorber may be used singly or in combination of two or more kinds thereof. In a case where two or more kinds thereof are used, it is preferable that the total amount thereof is within the above-described range.

<Antioxidant>

The coloring resin composition according to the embodiment of the present invention can contain an antioxidant. Examples of the antioxidant include a phenol compound, a phosphite ester compound, and a thioether compound. As the phenol compound, any phenol compound which is known as a phenol-based antioxidant can be used. Preferred examples of the phenol compound include a hindered phenol compound. A compound having a substituent at a site (ortho position) adjacent to a phenolic hydroxy group is preferable. As the substituent, a substituted or unsubstituted alkyl group having 1 to 22 carbon atoms is preferable. In addition, as the antioxidant, a compound having a phenol group and a phosphite ester group in the same molecule is also preferable. In addition, as the antioxidant, a phosphorus antioxidant can also be suitably used. The content of the antioxidant in the total solid content of the coloring resin composition is preferably 0.01 to 20 mass % and more preferably 0.3 to 15 mass %. The antioxidant may be used singly or in combination of two or more kinds thereof. In a case where two or more kinds thereof are used, it is preferable that the total amount thereof is within the above-described range.

<Other Components>

Optionally, the coloring resin composition according to the embodiment of the present invention may further contain a sensitizer, a filler, a thermal curing accelerator, a plasticizer, and other auxiliary agents (for example, conductive particles, an anti-foaming agent, a flame retardant, a leveling agent, a peeling accelerator, an aromatic chemical, a surface tension adjuster, or a chain transfer agent). By appropriately containing these components, properties such as film properties can be adjusted. The details of the components can be found in, for example, paragraph No. 0183 of JP2012-003225A (corresponding to paragraph No. 0237 of US2013/0034812A) and paragraph Nos. 0101 to 0104 and 0107 to 0109 of JP2008-250074A, the contents of which are incorporated herein by reference. In addition, optionally, the coloring resin composition may contain a potential antioxidant. Examples of the potential antioxidant include a compound in which a site functioning as an antioxidant is protected by a protective group, and the protective group is eliminated by heating the compound at 100° C. to 250° C. or heating the compound at 80° C. to 200° C. in the presence of an acid or base catalyst so that the compound functions as an antioxidant. Examples of the potential antioxidant include the compounds described in WO2014/021023A, WO2017/030005A, and JP2017-008219A. Examples of a commercially available product thereof include ADEKA ARKLS GPA-5001 (manufactured by ADEKA Corporation). In addition, as described in JP2018-155881A, C. I. Pigment Yellow 129 may be added for the purpose of improving weather fastness.

In order to adjust the refractive index of a film to be obtained, the coloring resin composition according to the embodiment of the present invention may contain a metal oxide. Examples of the metal oxide include TiO₂, ZrO₂, Al₂O₃, and SiO₂. The primary particle diameter of the metal oxide is preferably 1 to 100 nm, more preferably 3 to 70 nm, and still more preferably 5 to 50 nm. The metal oxide may have a core-shell structure. In addition, in this case, the core portion may be hollow.

The coloring resin composition according to the embodiment of the present invention may include a light-resistance improver. Examples of the light-resistance improver include the compounds described in paragraph Nos. 0036 and 0037 of JP2017-198787A, the compounds described in paragraph Nos. 0029 to 0034 of JP2017-146350A, the compounds described in paragraph Nos. 0036 and 0037, and 0049 to 0052 of JP2017-129774A, the compounds described in paragraph Nos. 0031 to 0034 and 0058 and 0059 of JP2017-129674A, the compounds described in paragraph Nos. 0036 and 0037, and 0051 to 0054 of JP2017-122803A, the compounds described in paragraph Nos. 0025 to 0039 of WO2017/164127A, the compounds described in paragraph Nos. 0034 to 0047 of JP2017-186546A, the compounds described in paragraph Nos. 0019 to 0041 of JP2015-025116A, the compounds described in paragraph Nos. 0101 to 0125 of JP2012-145604A, the compounds described in paragraph Nos. 0018 to 0021 of JP2012-103475A, the compounds described in paragraph Nos. 0015 to 0018 of JP2011-257591A, the compounds described in paragraph Nos. 0017 to 0021 of JP2011-191483A, the compounds described in paragraph Nos. 0108 to 0116 of JP2011-145668A, and the compounds described in paragraph Nos. 0103 to 0153 of JP2011-253174A.

In the coloring resin composition according to the embodiment of the present invention, the content of liberated metal which is not bonded to or coordinated with a pigment or the like is preferably 100 ppm or less, more preferably 50 ppm or less, and still more preferably 10 ppm or less, it is particularly preferable to not contain the liberated metal substantially. According to this aspect, effects such as stabilization of pigment dispersibility (restraint of aggregation), improvement of spectral characteristics due to improvement of dispersibility, restraint of conductivity fluctuation due to stabilization of curable components or elution of metal atoms and metal ions, and improvement of display characteristics can be expected. In addition, the effects described in JP2012-153796A, JP2000-345085A, JP2005-200560A, JP1996-043620A (JP-H08-043620A), JP2004-145078A, JP2014-119487A, JP2010-083997A, JP2017-090930A, JP2018-025612A, JP2018-025797A, JP2017-155228A, JP2018-036521A, and the like can also be obtained. Examples of the types of the above-described liberated metals include Na, K, Ca, Sc, Ti, Mn, Cu, Zn, Fe, Cr, Co, Mg, Al, Sn, Zr, Ga, Ge, Ag, Au, Pt, Cs, Ni, Cd, Pb, and Bi. In addition, in the coloring resin composition according to the embodiment of the present invention, the content of liberated halogen which is not bonded to or coordinated with a pigment or the like is preferably 100 ppm or less, more preferably 50 ppm or less, and still more preferably 10 ppm or less, it is particularly preferable to not contain the liberated halogen substantially. Examples of halogen include F, Cl, Br, I, and anions thereof. Examples of a method for reducing liberated metals and halogens in the coloring resin composition include washing with ion exchange water, filtration, ultrafiltration, and purification with an ion exchange resin.

It is also preferable that the coloring resin composition according to the embodiment of the present invention does not substantially include terephthalic acid ester. Here, the “does not substantially include” means that the content of terephthalic acid ester is 1000 mass ppb or less in the total amount of the coloring resin composition, and it is more preferable to be 100 mass ppb or less and particularly preferable to be 0.

<Storage Container>

A storage container of the coloring resin composition according to the embodiment of the present invention is not particularly limited, and a known storage container can be used. In addition, as the storage container, it is also preferable to use a multilayer bottle having an interior wall constituted with six layers from six kinds of resins or a bottle having a 7-layer structure from 6 kinds of resins for the purpose of suppressing infiltration of impurities into raw materials or coloring resin compositions. Examples of such a container include the containers described in JP2015-123351A. In addition, for the purpose of preventing metal elution from the container interior wall, improving storage stability of the coloring resin composition, and suppressing the alteration of components, it is also preferable that the container interior wall is formed of glass, stainless steel, or the like.

<Method for Preparing Coloring Resin Composition>

The coloring resin composition according to the embodiment of the present invention can be prepared by mixing the above-described components with each other. During the preparation of the coloring resin composition, all the components may be dissolved and/or dispersed in an organic solvent at the same time to prepare the coloring resin composition. Optionally, two or more solutions or dispersion liquids in which the respective components are appropriately blended may be prepared, and the solutions or dispersion liquids may be mixed with each other during use (during application) to prepare the coloring resin composition.

In addition, in the preparation of the coloring resin composition, a process of dispersing the pigment is preferably included. In the process for dispersing the pigment, examples of a mechanical force which is used for dispersing the pigment include compression, pressing, impact, shear, and cavitation. Specific examples of these processes include a beads mill, a sand mill, a roll mill, a ball mill, a paint shaker, a microfluidizer, a high-speed impeller, a sand grinder, a flow jet mixer, high-pressure wet atomization, and ultrasonic dispersion. In addition, in the pulverization of the pigment in a sand mill (beads mill), it is preferable to perform a treatment under the condition for increasing a pulverization efficiency by using beads having small diameters; increasing the filling rate of the beads; or the like. Incidentally, it is preferable to remove coarse particles by filtration, centrifugation, or the like after the pulverization treatment. In addition, as the process and the dispersing machine for dispersing the pigment, the process and the dispersing machine described in “Dispersion Technology Comprehension, published by Johokiko Co., Ltd., Jul. 15, 2005”, “Actual comprehensive data collection on dispersion technology and industrial application centered on suspension (solid/liquid dispersion system), published by Publication Department, Management Development Center, Oct. 10, 1978”, and paragraph No. 0022 of JP2015-157893A can be suitably used. In addition, in the process for dispersing the pigment, a refining treatment of particles in a salt milling step may be performed. With regard to the materials, equipment, treatment conditions, and the like used in the salt milling step, reference can be made to, for example, the description in JP2015-194521A and JP2012-046629A.

During the preparation of the coloring resin composition, it is preferable that the coloring resin composition is filtered through a filter, for example, in order to remove foreign matter or to reduce defects. As the filter, any filters that have been used in the related art for filtration use and the like may be used without particular limitation. Examples of a material of the filter include: a fluororesin such as polytetrafluoroethylene (PTFE); a polyamide resin such as nylon (for example, nylon-6 or nylon-6,6); and a polyolefin resin (including a polyolefin resin having a high density and an ultrahigh molecular weight) such as polyethylene or polypropylene (PP). Among these materials, polypropylene (including a high-density polypropylene) and nylon are preferable.

The pore size of the filter is preferably 0.01 to 7.0 μm, more preferably 0.01 to 3.0 μm, and still more preferably 0.05 to 0.5 μm. In a case where the pore size of the filter is within the above-described range, fine foreign matters can be reliably removed. With regard to the pore size value of the filter, reference can be made to a nominal value of filter manufacturers. As the filter, various filters provided by Nihon Pall Corporation (DFA4201NIEY and the like), Toyo Roshi Kaisha., Ltd., Nihon Entegris K.K. (formerly Nippon Microlith Co., Ltd.), Kitz Micro Filter Corporation, and the like can be used.

In addition, it is preferable that a fibrous filter material is used as the filter. Examples of the fibrous filter material include a polypropylene fiber, a nylon fiber, and a glass fiber. Examples of a commercially available product include SBP type series (SBP008 and the like), TPR type series (TPR002, TPR005, and the like), or SHPX type series (SHPX003 and the like), all manufactured by Roki Techno Co., Ltd.

In a case of using a filter, different filters (for example, a first filter, a second filter, and the like) may be combined. In this case, the filtration with each of the filters may be performed once or may be performed twice or more times. In addition, filters having different pore sizes within the above-described range may be combined. In addition, the filtration through the first filter may be performed with only a dispersion liquid, the other components may be mixed therewith, and then the filtration through the second filter may be performed.

(Film)

The film according to the embodiment of the present invention is a film obtained from the above-described coloring resin composition according to the embodiment of the present invention. The film according to the embodiment of the present invention can be used for a color filter, a near-infrared transmitting filter, a near-infrared cut filter, a black matrix, a light-shielding film, and the like. For example, the film according to an embodiment of the present invention can be preferably used as a colored layer of a color filter.

The thickness of the film according to the embodiment of the present invention can be adjusted according to the purpose. For example, the film thickness is preferably 20 μm or less, more preferably 10 μm or less, and still more preferably 5 μm or less. The lower limit of the film thickness is preferably 0.1 μm or more, more preferably 0.2 μm or more, and still more preferably 0.3 μm or more.

In the film according to the embodiment of the present invention, a thickness of the film after performing a heating treatment of the film at 300° C. for 5 hours in a nitrogen atmosphere is preferably 70% or more of a thickness of the film before the heating treatment, more preferably 80% or more thereof, and still more preferably 90% or more.

In addition, a thickness of the film after performing a heating treatment of the film at 350° C. for 5 hours in a nitrogen atmosphere is preferably 70% or more of a thickness of the film before the heating treatment, more preferably 80% or more thereof, and still more preferably 90% or more.

In addition, a thickness of the film after performing a heating treatment of the film at 400° C. for 5 hours in a nitrogen atmosphere is preferably 70% or more of a thickness of the film before the heating treatment, more preferably 80% or more thereof, and still more preferably 90% or more.

In the film according to the embodiment of the present invention, it is preferable that a maximum value of a transmittance of the film at a wavelength of 400 to 1100 nm is 70% or more (preferably 75% or more, more preferably 80% or more, and still more preferably 85% or more), and a minimum value thereof is 30% or less (preferably 25% or less, more preferably 20% or less, and still more preferably 15% or less).

(Method for Manufacturing Film)

The film according to the embodiment of the present invention can be manufactured through a step of applying the coloring resin composition according to the embodiment of the present invention on a support. The method for manufacturing the film according to the embodiment of the present invention preferably further includes a step of forming a pattern (pixel). Examples of a method for forming the pattern (pixel) include a photolithography method and a dry etching method, and a photolithography method is preferable.

<Photolithography Method>

First, a case of forming the pattern by a photolithography method to manufacture a film will be described. Pattern formation by the photolithography method preferably includes a step of forming a coloring resin composition layer on a support using the coloring resin composition according to the embodiment of the present invention, a step of exposing the coloring resin composition layer in a patterned manner, and a step of removing a non-exposed portion of the coloring resin composition layer by development to form a pattern (pixel). A step (pre-baking step) of baking the coloring resin composition layer and a step (post-baking step) of baking the developed pattern (pixel) may be provided, optionally.

In the step of forming a coloring resin composition layer, the coloring resin composition layer is formed on a support using the coloring resin composition according to the embodiment of the present invention. The support is not particularly limited, and can be appropriately selected depending on applications. Examples thereof include a glass substrate and a silicon substrate, and a silicon substrate is preferable. In addition, a charge coupled device (CCD), a complementary metal-oxide semiconductor (CMOS), a transparent conductive film, or the like may be formed on the silicon substrate. In some cases, a black matrix for isolating each pixel is formed on the silicon substrate. In addition, an undercoat layer may be provided on the silicon substrate so as to improve adhesiveness to an upper layer, prevent the diffusion of materials, or planarize the surface of the substrate.

As a method of applying the coloring resin composition, a known method can be used. Examples thereof include a dropping method (drop casting); a slit coating method; a spray method; a roll coating method; a spin coating method (spin coating); a cast coating method; a slit and spin method; a pre-wet method (for example, a method described in JP2009-145395A), various printing methods such as an ink jet (for example, on-demand type, piezo type, thermal type), a discharge printing such as nozzle jet, a flexo printing, a screen printing, a gravure printing, a reverse offset printing, and a metal mask printing; a transfer method using molds and the like; and a nanoimprinting method. A method for applying the ink jet is not particularly limited, and examples thereof include a method described in “Extension of Use of Ink Jet—Infinite Possibilities in Patent—” (February, 2005, S. B. Research Co., Ltd.) (particularly pp. 115 to 133) and methods described in JP2003-262716A, JP2003-185831A, JP2003-261827A, JP2012-126830A, and JP2006-169325A. In addition, as the method of applying the coloring resin composition, methods described in WO2017/030174A and WO2017/018419A can also be used, the contents of which are incorporated herein by reference.

The coloring resin composition layer formed on the support may be dried (pre-baked). In a case of producing a film by a low-temperature process, pre-baking may not be performed. In a case of performing the pre-baking, the pre-baking temperature is preferably 150° C. or lower, more preferably 120° C. or lower, and still more preferably 110° C. or lower. The lower limit may be set to, for example, 50° C. or higher, or to 80° C. or higher. The pre-baking time is preferably 10 to 300 seconds, more preferably 40 to 250 seconds, and still more preferably 80 to 220 seconds. The pre-baking can be performed using a hot plate, an oven, or the like.

Next, the coloring resin composition layer is exposed in a patterned manner (exposing step). For example, the coloring resin composition layer can be exposed in a patterned manner using a stepper exposure device or a scanner exposure device through a mask having a predetermined mask pattern. Thus, the exposed portion can be cured.

Examples of the radiation (light) which can be used during the exposure include g-rays and i-rays. In addition, light (preferably light having a wavelength of 180 to 300 nm) having a wavelength of 300 nm or less can be used. Examples of the light having a wavelength of 300 nm or less include KrF-rays (wavelength: 248 nm) and ArF-rays (wavelength: 193 nm), and KrF-rays (wavelength: 248 nm) are preferable. In addition, a long-wave light source of 300 nm or more can be used.

In addition, in a case of exposure, the composition layer may be irradiated with light continuously to expose the composition layer, or the composition layer may be irradiated with light in a pulse to expose the composition layer (pulse exposure). The pulse exposure refers to an exposing method in which light irradiation and resting are repeatedly performed in a short cycle (for example, millisecond-level or less). In a case of the pulse exposure, the pulse width is preferably 100 nanoseconds (ns) or less, more preferably 50 nanoseconds or less, and still more preferably 30 nanoseconds or less. The lower limit of the pulse width is not particularly limited, and may be 1 femtosecond (fs) or more or 10 femtoseconds or more. The frequency is preferably 1 kHz or more, more preferably 2 kHz or more, and still more preferably 4 kHz or more. The upper limit of the frequency is preferably 50 kHz or less, more preferably 20 kHz or less, and still more preferably 10 kHz or less. The maximum instantaneous illuminance is preferably 50000000 W/m² or more, more preferably 100000000 W/m² or more, and still more preferably 200000000 W/m² or more. In addition, the upper limit of the maximum instantaneous illuminance is preferably 1000000000 W/m² or less, more preferably 800000000 W/m² or less, and still more preferably 500000000 W/m² or less. The pulse width refers to a time during which light is irradiated in a pulse period. In addition, the frequency refers to the number of pulse periods per second. In addition, the maximum instantaneous illuminance refers to an average illuminance within the period of light irradiation in the pulse period. In addition, the pulse period refers to a period in which light irradiation and resting in the pulse exposure are defined as one cycle.

The irradiation amount (exposure amount) is, for example, preferably 0.03 to 2.5 J/cm² and more preferably 0.05 to 1.0 J/cm². The oxygen concentration during the exposure can be appropriately selected, and the exposure may also be performed, for example, in a low-oxygen atmosphere having an oxygen concentration of 19% by volume or less (for example, 15% by volume, 5% by volume, and substantially oxygen-free) or in a high-oxygen atmosphere having an oxygen concentration of more than 21% by volume (for example, 22% by volume, 30% by volume, and 50% by volume), in addition to an atmospheric air. In addition, the exposure illuminance can be appropriately set, and can be usually selected from a range of 1000 W/m² to 100000 W/m² (for example, 5000 W/m², 15000 W/m², or 35000 W/m²). Appropriate conditions of each of the oxygen concentration and the exposure illuminance may be combined, and for example, a combination of the oxygen concentration of 10% by volume and the illuminance of 10000 W/m², a combination of the oxygen concentration of 35% by volume and the illuminance of 20000 W/m², or the like is available.

Next, the non-exposed portion of the coloring resin composition layer is removed by development to form a pattern (pixel). The non-exposed portion of the coloring resin composition layer can be removed by development using a developer. Thus, the coloring resin composition layer of the non-exposed portion in the exposing step is eluted into the developer, and as a result, only a photocured portion remains. The temperature of the developer is preferably, for example, 20° C. to 30° C. The development time is preferably 20 to 180 seconds. In addition, in order to improve residue removing properties, a step of removing the developer by shaking off per 60 seconds and supplying a fresh developer may be repeated multiple times.

Examples of the developer include an organic solvent and an alkali developer, and an alkali developer is preferably used. As the alkali developer, an alkaline solution (alkali developer) in which an alkali agent is diluted with pure water is preferable. Examples of the alkali agent include organic alkaline compounds such as ammonia, ethylamine, diethylamine, dimethylethanolamine, diglycol amine, diethanolamine, hydroxyamine, ethylenediamine, tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, ethyltrimethylammonium hydroxide, benzyltrimethylammonium hydroxide, dimethylbis(2-hydroxyethyl)ammonium hydroxide, choline, pyrrole, piperidine, and 1,8-diazabicyclo[5.4.0]-7-undecene, and inorganic alkaline compounds such as sodium hydroxide, potassium hydroxide, sodium carbonate, sodium hydrogen carbonate, sodium silicate, and sodium metasilicate. In consideration of environmental aspects and safety aspects, the alkali agent is preferably a compound having a high molecular weight. The concentration of the alkali agent in the aqueous alkaline solution is preferably 0.001 to 10 mass % and more preferably 0.01 to 1 mass %. In addition, the developer may further contain a surfactant. Examples of the surfactant include the surfactants described above. Among these, a nonionic surfactant is preferable. From the viewpoint of easiness of transport, storage, and the like, the developer may be obtained by temporarily preparing a concentrated solution and diluting the concentrated solution to a necessary concentration during use. The dilution ratio is not particularly limited, and can be set to, for example, a range of 1.5 to 100 times. In addition, it is also preferable to wash (rinse) with pure water after development. In addition, it is preferable that the rinsing is performed by supplying a rinsing liquid to the coloring resin composition layer after development while rotating the support on which the coloring resin composition layer after development is formed. In addition, it is preferable that the rinsing is performed by moving a nozzle discharging the rinsing liquid from a center of the support to a peripheral edge of the support. In this case, in the movement of the nozzle from the center of the support to the peripheral edge of the support, the nozzle may be moved while gradually decreasing the moving speed of the nozzle. By performing rinsing in this manner, in-plane variation of rinsing can be suppressed. In addition, the same effect can be obtained by gradually decreasing the rotating speed of the support while moving the nozzle from the center of the support to the peripheral edge of the support.

After the development, it is preferable to carry out an additional exposure treatment or a heating treatment (post-baking) after carrying out drying. The additional exposure treatment or the post-baking is a curing treatment after development in order to complete curing. The heating temperature in the post-baking is preferably, for example, 100° C. to 240° C. and more preferably 200° C. to 240° C. The film after development is post-baked continuously or batchwise using a heating unit such as a hot plate, a convection oven (hot air circulation dryer), and a high-frequency heater under the above-described conditions. In a case of performing the additional exposure treatment, light used for the exposure is preferably light having a wavelength of 400 nm or less. In addition, the additional exposure treatment may be carried out by the method described in KR10-2017-0122130A.

<Dry Etching Method>

Pattern formation by a dry etching method preferably includes a step of forming a coloring resin composition layer on a support using the coloring resin composition according to the embodiment of the present invention and curing the entire coloring resin composition layer to form a cured composition layer, a step of forming a photoresist layer on the cured composition layer, a step of exposing the photoresist layer in a patterned manner and then developing the photoresist layer to form a resist pattern, and a step of dry-etching the cured composition layer through this resist pattern as a mask and using an etching gas. It is preferable that pre-baking treatment is further performed in order to form the photoresist layer. In particular, as the forming process of the photoresist layer, it is desirable that a heating treatment after exposure and a heating treatment after development (post-baking treatment) are performed. The details of the pattern formation by the dry etching method can be found in paragraph Nos. 0010 to 0067 of JP2013-064993A, the content of which is incorporated herein by reference.

(Color Filter)

The color filter according to the embodiment of the present invention has the film according to the embodiment of the present invention. More preferably, the color filter according to the embodiment of the present invention has the film according to the embodiment of the present invention as a pixel of the color filter. The color filter according to the embodiment of the present invention can be used for a solid-state imaging element such as a charge coupled device (CCD) and a complementary metal-oxide semiconductor (CMOS), an image display device, or the like.

In the color filter according to the embodiment of the present invention, the thickness of the film according to the embodiment of the present invention can be appropriately adjusted depending on the purposes. The film thickness is preferably 20 μm or less, more preferably 10 μm or less, and still more preferably 5 μm or less. The lower limit of the film thickness is preferably 0.1 μm or more, more preferably 0.2 μm or more, and still more preferably 0.3 μm or more.

In the color filter according to the embodiment of the present invention, the width of the pixel is preferably 0.5 to 20.0 μm. The lower limit is preferably 1.0 μm or more and more preferably 2.0 μm or more. The upper limit is preferably 15.0 μm or less and more preferably 10.0 μm or less. In addition, the Young's modulus of the pixel is preferably 0.5 to 20 GPa and more preferably 2.5 to 15 GPa.

Each pixel included in the color filter according to the embodiment of the present invention preferably has high flatness. Specifically, the surface roughness Ra of the pixel is preferably 100 nm or less, more preferably 40 nm or less, and still more preferably 15 nm or less. The lower limit is not specified, but is preferably, for example, 0.1 nm or more. The surface roughness of the pixel can be measured, for example, using an atomic force microscope (AFM) Dimension 3100 manufactured by Veeco Instruments, Inc. In addition, the contact angle of water on the pixel can be appropriately set to a preferred value and is typically in the range of 50° to 110°. The contact angle can be measured, for example, using a contact angle meter CV-DT-A Model (manufactured by Kyowa Interface Science Co., Ltd.). In addition, it is preferable that the volume resistivity value of the pixel is high. Specifically, the volume resistivity value of the pixel is preferably 10⁹ Ω·cm or more and more preferably 10¹¹ Ω·cm or more. The upper limit is not specified, but is, for example, preferably 10¹⁴ Ω·cm or less. The volume resistivity value of the pixel can be measured using an ultrahigh resistance meter 5410 (manufactured by Advantest Corporation).

In addition, in the color filter according to the embodiment of the present invention, a protective layer may be provided on the surface of the film according to the embodiment of the present invention. By providing the protective layer, various functions such as oxygen shielding, low reflection, hydrophilicity/hydrophobicity, and shielding of light (ultraviolet rays, near-infrared rays, and the like) having a specific wavelength can be imparted. The thickness of the protective layer is preferably 0.01 to 10 μm and more preferably 0.1 to 5 μm. Examples of a method for forming the protective layer include a method of forming the protective layer by applying a resin composition for forming a protective layer, which is dissolved in an organic solvent, a chemical vapor deposition method, and a method of attaching a molded resin with an adhesive. Examples of components constituting the protective layer include a (meth)acrylic resin, an ene-thiol resin, a polycarbonate resin, a polyether resin, a polyarylate resin, a polysulfone resin, a polyethersulfone resin, a polyphenylene resin, a polyarylene ether phosphine oxide resin, a polyimide resin, a polyamidoimide resin, a polyolefin resin, a cyclic olefin resin, a polyester resin, a styrene resin, a polyol resin, a polyvinylidene chloride resin, a melamine resin, a urethane resin, an aramid resin, a polyamide resin, an alkyd resin, an epoxy resin, a modified silicone resin, a fluororesin, a polycarbonate resin, a polyacrylonitrile resin, a cellulose resin, Si, C, W, Al₂O₃, Mo, SiO₂, and Si₂N₄, and two or more kinds of these components may be contained. For example, in a case of a protective layer for oxygen shielding, it is preferable that the protective layer contains a polyol resin, SiO₂, and Si₂N₄. In addition, in a case of a protective layer for low reflection, it is preferable that the protective layer contains a (meth)acrylic resin and a fluororesin.

In a case of forming the protective layer by applying a resin composition for forming a protective layer, as a method for applying the resin composition for forming a protective layer, a known method such as a spin coating method, a casting method, a screen printing method, and an ink jet method can be used. As the organic solvent included in the resin composition for forming a protective layer, a known organic solvent (for example, propylene glycol 1-monomethyl ether 2-acetate, cyclopentanone, ethyl lactate, and the like) can be used. In a case of forming the protective layer by a chemical vapor deposition method, as the chemical vapor deposition method, a known chemical vapor deposition method (thermochemical vapor deposition method, plasma chemical vapor deposition method, and photochemical vapor deposition method) can be used.

The protective layer may contain, as desired, an additive such as organic or inorganic fine particles, an absorber of light (for example, ultraviolet rays, near-infrared rays, and the like) having a specific wavelength, a refractive index adjusting agent, an antioxidant, an adhesive agent, and a surfactant. Examples of the organic or inorganic fine particles include polymer fine particles (for example, silicone resin fine particles, polystyrene fine particles, and melamine resin fine particles), titanium oxide, zinc oxide, zirconium oxide, indium oxide, aluminum oxide, titanium nitride, titanium oxynitride, magnesium fluoride, hollow silica, silica, calcium carbonate, and barium sulfate. As the absorber of light having a specific wavelength, a known absorber can be used. The content of these additives can be appropriately adjusted, but is preferably 0.1 to 70 mass % and still more preferably 1 to 60 mass % with respect to the total mass of the protective layer.

In addition, as the protective layer, the protective layers described in paragraph Nos. 0073 to 0092 of JP2017-151176A can also be used.

The color filter may have a base layer. The base layer can also be formed using, for example, a composition obtained by removing a coloring material from the above-described coloring resin composition according to the embodiment of the present invention.

A preferred surface contact angle of the base layer is preferably 20° to 70° in a case of being measured with diiodomethane, and preferably 30° to 80° in a case of being measured with water.

In a case where the above-described surface contact angle is within the above-described range, both application properties of the coloring resin composition and application properties of a composition for forming the base are excellent.

In order to keep the surface contact angle within the above-described range, a method such as addition of a surfactant can be mentioned.

In addition, in the green pixel of the color filter, green color may be formed in a combination of C. I. Pigment Green 7, C. I. Pigment Green 36, C. I. Pigment Yellow 139, and C. I. Pigment Yellow 185, or in a combination of C. I. Pigment Green 58, C. I. Pigment Yellow 150, and C. I. Pigment Yellow 185.

The color filter may have a structure in which each colored pixel is embedded in a space partitioned in, for example, a lattice form by a partition wall. In addition, the coloring resin composition according to the embodiment of the present invention can also be suitably used for a pixel configuration described in WO2019/102887A.

(Solid-State Imaging Element)

The solid-state imaging element according to an embodiment of the present invention has the film according to the embodiment of the present invention. The configuration of the solid-state imaging element according to the embodiment of the present invention is not particularly limited as long as the solid-state imaging element is configured to include the film according to the embodiment of the present invention and functions as a solid-state imaging element. Examples of the configuration include the following configurations.

The solid-state imaging element is configured to have a plurality of photodiodes constituting a light receiving area of the solid-state imaging element (a charge coupled device (CCD) image sensor, a complementary metal-oxide semiconductor (CMOS) image sensor, or the like), and a transfer electrode formed of polysilicon or the like on a substrate; have a light-shielding film having openings only over the light receiving section of the photodiodes on the photodiodes and the transfer electrodes; have a device-protective film formed of silicon nitride or the like, which is formed to coat the entire surface of the light-shielding film and the light receiving section of the photodiodes, on the light-shielding film; and have a color filter on the device-protective film. Further, the solid-state imaging element may also be configured, for example, such that it has a light collecting unit (for example, a microlens, which is the same hereinafter) on a device-protective film under a color filter (a side closer to the substrate), or has a light collecting unit on a color filter. In addition, the color filter may have a structure in which each colored pixel is embedded in a space partitioned in, for example, a lattice form by a partition wall. In this case, it is preferable that the partition wall has a lower refractive index than each colored pixel. Examples of an imaging device having such a structure include the devices described in JP2012-227478A, JP2014-179577A, WO2018/043654A, and US2018/0040656A. An imaging device including the solid-state imaging element according to the embodiment of the present invention can also be used as a vehicle camera or a surveillance camera, in addition to a digital camera or electronic apparatus (mobile phones or the like) having an imaging function.

Further, the solid-state imaging element incorporating the color filter according to the embodiment of the present invention may incorporate another color filter, an infrared cut filter, an organic photoelectric conversion film, or the like in addition to the color filter according to the embodiment of the present invention.

(Image Display Device)

The image display device according to an embodiment of the present invention has the film according to the embodiment of the present invention. Examples of the image display device include a liquid crystal display device or an organic electroluminescent display device. The definitions of image display devices or the details of the respective image display devices are described in, for example, “Electronic Display Device (Akio Sasaki, Kogyo Chosakai Publishing Co., Ltd., published in 1990)”, “Display Device (Sumiaki Ibuki, Sangyo Tosho Co., Ltd.)”, and the like. In addition, the liquid crystal display device is described in, for example, “Liquid Crystal Display Technology for Next Generation (edited by Tatsuo Uchida, Kogyo Chosakai Publishing Co., Ltd., published in 1994)”. The liquid crystal display device to which the present invention can be applied is not particularly limited, and can be applied to, for example, liquid crystal display devices employing various systems described in the “Liquid Crystal Display Technology for Next Generation”.

EXAMPLES

Hereinafter, the present invention will be described in detail using examples. The materials, the amounts of materials to be used, the proportions, the treatment details, the treatment procedure, or the like shown in the examples below may be modified appropriately as long as the modifications do not depart from the spirit of the present invention. Therefore, the scope of the present invention is not limited to the specific examples shown below. Unless otherwise specified, “parts” and “%” are based on mass.

<Measurement of Weight-Average Molecular Weight (Mw) of Sample>

The weight-average molecular weight (Mw) of a sample was measured by gel permeation chromatography (GPC) according to the following conditions.

Types of columns: columns formed by connection of TOSOH TSKgel Super HZM-H, TOSOH TSKgel Super HZ4000, and TOSOH TSKgel Super HZ2000

Developing solvent: tetrahydrofuran

Column temperature: 40° C.

Flow rate (amount of a sample to be injected): 1.0 μL (sample concentration: 0.1 mass %)

Device name: HLC-8220GPC manufactured by Tosoh Corporation

Detector: refractive index (RI) detector

Calibration curve base resin: polystyrene resin

<Measurement of Acid Value of Sample>

The acid value of the sample represents a mass of potassium hydroxide required to neutralize acidic components per 1 g of solid content of the sample. The acid value of the sample was measured as follows. That is, a measurement sample was dissolved in a mixed solvent of tetrahydrofuran/water=9/1 (mass ratio), and the obtained solution was subjected to neutralization titration with a 0.1 mol/L sodium hydroxide aqueous solution at 25° C. using a potentiometric titrator (trade name: AT-510, manufactured by KYOTO ELECTRONICS MANUFACTURING CO., LTD.). An inflection point of a titration pH curve was set as a titration end point, and the acid value was calculated from the following equation.

A=56.11×Vs×0.5×f/w

A: acid value (mgKOH/g)

Vs: amount (mL) of the 0.1 mol/L sodium hydroxide aqueous solution used for the titration

f: titer of the 0.1 mol/L sodium hydroxide aqueous solution

w: mass (g) of the sample (expressed in terms of solid contents)

<Measurement of C═C Value of Sample>

The C═C value was obtained by extracting a low-molecular-weight component (a) of an ethylenically unsaturated bonding site (for example, in a case where the resin has an acryloxy group, acrylic acid) from the resin by an alkali treatment, measuring the content thereof by a high performance liquid chromatography (HPLC), and calculating the ethylenically unsaturated bonding value from the following expression based on the measured value.

Specifically, 0.1 g of the resin was dissolved in a tetrahydrofuran and methanol-mixed solution (50 mL/15 mL), 10 mL of a 4 mol/L sodium hydroxide aqueous solution was added thereto, and the mixture was reacted at 40° C. for 2 hours. The reaction solution was neutralized with 10.2 mL of a 4 mol/L methanesulfonic acid aqueous solution, the mixed solution to which 5 mL of ion exchange water and 2 mL of methanol were added was transferred to a 100 mL volumetric flask, and then the mixed solution was diluted in the volumetric flask by methanol to prepare a measurement sample for HPLC. Thereafter, the ethylenically unsaturated bonding value was measured under the following conditions. The content of the low-molecular-weight component (a) was calculated from a calibration curve of the low-molecular-weight component (a) prepared separately, and the ethylenically unsaturated bonding value was calculated from the following expression.

C═C value (mmol/g)=(Content (ppm) of low-molecular-weight component (a)/Molecular weight (g/mol) of low-molecular-weight component (a)/(Weighed value (g) of polymer solution)×(Concentration of solid contents (%) of polymer solution/100)×10)  [C═C value calculation expression]

—HPLC Measurement Conditions—

Measuring equipment: Agilent-1200 (manufactured by Agilent Technologies, Inc.)

Column: Synergi 4u Polar-RP 80A manufactured by Phenomenex; 250 mm×4.60 mm (inner diameter)+guard column

Column temperature: 40° C.

Analysis time: 15 minutes

Flow rate: 1.0 mL/min (maximum liquid feeding pressure: 182 bar (18.2 MPa))

Injection amount: 5 μl

Detection wavelength: 210 nm

Eluent: tetrahydrofuran (for stabilizer-free HPLC)/buffer solution (ion exchange aqueous solution containing 0.2% by volume of phosphoric acid and 0.2% by volume of triethylamine)=55/45 (% by volume)

In the present specification, % by volume is a value at 25° C.

Synthesis Example 1: Synthesis of Specific Resin A-20

13.5 g of vinylbenzoic acid, 13.5 g of N,N-diethylacrylamide, and 127 g of a macromonomer M1 described in paragraphs 0180 and 0181 of JP2011-89108A was dissolved in 320 g of propylene glycol monomethyl ether acetate. 2.3 g of V-601 was added thereto under a nitrogen stream, and the mixture was heated and stirred at 75° C. for 8 hours. The obtained polymer solution was crystallized with hexane, and the obtained precipitate was dried to obtain a polymer (A-20). Mw of the obtained polymer was 20,000, and the acid value was 46 mgKOH/g.

Other specific resins used in Examples or Comparative Examples were synthesized by the same method as in A-20, except that the type and amount of the monomer used were appropriately changed.

Details of x, y, z, and w, which are the content ratios (molar ratios) of each repeating unit in specific resins A-1 to A-40 used in Examples or Comparative Examples, are as shown in the table below.

In addition, in A-22, A-25, and A-26, n:m was set to 50:50 (molar ratio).

TABLE 12 x y z w A-1 100 — — — A-2 50 50 — — A-3 80 20 — — A-4 65 35 — — A-5 20 80 — — A-6 30 70 — — A-7 65 35 — — A-8 35 65 — — A-9 20 60 20 — A-10 25 55 20 — A-11 10 90 — — A-12 5 22 70 3 A-13 30 70 — — A-14 30 70 — — A-15 20 70 10 — A-16 20 75 5 — A-17 15 85 — — A-18 20 50 30 — A-19 10 40 50 — A-20 40 15 45 — A-21 25 32 43 — A-22 30 30 40 — A-23 30 50 20 — A-24 25 30 45 — A-25 30 60 10 — A-26 35 30 5 30 A-27 30 15 50 5 A-28 20 20 50 10 A-29 10 10 60 20 A-30 40 45 15 — A-31 20 70 10 — A-32 30 51 19 — A-33 25 53 22 — A-34 61 39 — — A-35 90 10 — — A-36 100 — — — A-37 25 75 — — A-38 25 70 5 — A-39 20 70 10 — A-40 30 55 15 —

<Production of Dispersion Liquids R1 to R8, B1 to B5, G1 to G4, Y1 and Y2, I1 to I6, and Bk1 to Bk7>

A mixed solution obtained by mixing raw materials listed in the table below was mixed and dispersed for 3 hours by a beads mill (zirconia beads: 0.3 mm diameter), and then subjected to a dispersion treatment under a pressure of 2,000 MPa at a flow rate of 500 g/min using a high-pressure disperser equipped with a pressure-reducing system NANO-3000-10 (manufactured by Nippon BEE Chemical Co., Ltd.). The dispersion treatment was repeated 10 times to obtain each dispersion liquid.

TABLE 13 Coloring material IR Pigment dispersion PR PR PR PB PB PB PG PY PY PV coloring liquid 264 254 179 15:4 15:6 16 PG 7 36 138 215 23 agent Dispersion R1 20.8 — — — — — — — — — — — liquid R2 — 24.2 — — — — — — — — — — R3 11.6 10.6 — — — — — — — — — — R4 22.9 2.1 — — — — — — — — — — R5 — 12.8 — — — — — — 5.5 — — — R6 13.1 — — — — — — — — 3.6 — — R7 — — 12.9 — — — — — — — — — R8 — — 10.1 — — — — — — 4.2 — — B1 — — — 21.5 — — — — — — — — B2 — — — — 22.6 — — — — — — — B3 — — — — — 22.4 — — — — — — B4 — — — 17.2 5.4 — — — — — — — B5 — — — 10.8 — 6.9 — — — — — — G1 — — — — — — 12.3 — — — — — G2 — — — — — — — 11.9 — — — — G3 — — — — — — 10.1 — — 2.0 — — G4 — — — — — — — 10.2 2.9 — — — Y1 — — — — — — — — 12.9 — — — Y2 — — — — — — — — — 13.1 — — I1 — — — — — — — — — — — 22.5 I2 — — — — — — — — — — — 22.5 I3 — — — — — — — — — — — 22.5 I4 — — — — — — — — — — — 24.3 I5 — — — — — — — — — — — 24.3 I6 — — — — — — — — — — — 24.3 Bk1 — 7.7 — 5.0 — — — — — — — — Bk2 — — 4.9 — — 1.9 5.2 — — — — — Bk3 6.8 — — — — 4.4 — — — 1.0 — — Bk4 — 5.6 — — 3.2 — — — 2.2 — — 3.6 Bk5 — — — — — 6.3 — — — — — — Bk6 — — — — 3.1 — — — 3.1 — — — Bk7 — — — — 4.2 — — — 4.2 — 4.2 — Coloring material Pigment dispersion PBk Derivative Derivative Derivative Resin (dispersant) liquid IRGAPHORE 32 1 2 3 A-20 A-22 A-26 A-29 Dispersion R1 — — 5.2 — — 9.2 — — — liquid R2 — — — 5.6 — — 9.8 — — R3 — — — 4.6 — — — 11.2 — R4 — — 5.0 — — — — — — R5 — — 2.6 — — 4.5 — — — R6 — — 2.4 — — — 4.3 — — R7 — — 2.7 — — — — 4.2 — R8 — — 2.6 — — — — — — B1 — — — 5.0 — 9.8 — — — B2 — — — 4.2 — — 10.3 — — B3 — — — 5.6 — — — — 10.5 B4 — — — 4.8 — 5.4 — — 4.2 B5 — — 5.6 — — — — — — G1 — — — 2.5 — 4.1 — — — G2 — — — 2.3 — — 3.9 — — G3 — — — 2.6 — — — 3.3 — G4 — — — 2.3 — — — — — Y1 — — — 2.3 — 3.5 — — — Y2 — — — 2.3 — 3.7 — — — I1 — — — — 6.4 4.5 — — — I2 — — — — 6.4 — 4.5 — — I3 — — — — 6.4 — — 4.5 — I4 — — — — 7.2 — — — 4.5 I5 — — — — 7.2 — — — 2.3 I6 — — — — 7.2 — — — — Bk1 — — 2.3 — — 4.5 — — — Bk2 — — — 2.4 — — 4.3 — — Bk3 — — 2.3 — — — — 4.0 — Bk4 — — 2.3 — — — — — — Bk5 6.3 — — 2.1 — — — — 3.8 Bk6 3.1 3.1 — 2.1 — — — — 3.8 Bk7 — — 1.0 1.0 1.0 — — — 3.8 Pigment dispersion Resin (dispersant) Solvent liquid A-40 CA-1 CA-2 S-1 S-2 S-3 S-4 Dispersion R1 — — — 64.8 — — — liquid R2 — — — 60.4 — — — R3 — — — — 62.0 — — R4 — 12.3 — — — 57.7 — R5 — — — 74.6 — — — R6 — — — 76.6 — — — R7 — — — 80.2 — — — R8 4.0 — — 79.1 — — — B1 — — — — — 63.7 — B2 — — — — — — 62.9 B3 — — — — 61.5 — — B4 — — — — 63.0 — — B5 — — 8.4 68.3 — — — G1 — — — 81.1 — — — G2 — — — 81.9 — — — G3 — — — 82.0 — — — G4 3.7 — — 80.9 — — — Y1 — — — 81.3 — — — Y2 — — — 80.9 — — — I1 — — — — — — 66.6 I2 — — — — — 66.6 — I3 — — — — 66.6 — — I4 — — — 64.0 — — — I5 — 2.2 — 64.0 — — — I6 — — 4.5 64.0 — — — Bk1 — — — 80.5 — — — Bk2 — — — 81.3 — — — Bk3 — — — 81.5 — — — Bk4 4.1 — — 79.0 — — — Bk5 — — — 81.5 — — — Bk6 — — — 81.7 — — — Bk7 — — — 80.6 — — —

The unit of numerical values shown in the above table is part by mass. Among the raw materials shown in the above table, details of the raw materials shown by abbreviations are as follows.

[Coloring Material]

PR264: C. I. Pigment Red 264 (red pigment, diketopyrrolopyrrole pigment)

PR254: C. I. Pigment Red 254 (red pigment, diketopyrrolopyrrole pigment)

PR179: C. I. Pigment Red 179

PB15:4: C. I. Pigment Blue 15:4 (blue pigment, phthalocyanine pigment)

PB15:6: C. I. Pigment Blue 15:6 (blue pigment, phthalocyanine pigment)

PB16: C. I. Pigment Blue 16 (blue pigment, phthalocyanine pigment)

PG7: C. I. Pigment Green 7

PG36: C. I. Pigment Green 36

PY138: C. I. Pigment Yellow 138

PY215: C. I. Pigment Yellow 215

PV23: C. I. Pigment Violet 23

IR coloring agent: compound having the following structure (near-infrared absorbing ray pigment, in the following structural formula, Me represents a methyl group and Ph represents a phenyl group)

IRGAPHORE: Irgaphor Black S 0100 CF (manufactured by BASF, compound having the following structure, lactam-based pigment)

PBk32: C. I. Pigment Black 32 (compound having the following structure, perylene-based pigment)

Derivative 1: compound having the following structure

Derivative 2: compound having the following structure

Derivative 3: compound having the following structure

[Resin]

A-20, A-22, A-26, A-29, A-40: resins synthesized as in Synthesis Examples described above

CA-1: resin having the following structure ((meth)acrylic resin, a numerical value added to a main chain represents a molar ratio, and a numerical value added to a side chain represents the number of repeating units; the weight-average molecular weight was 20,000 and the acid value was 77 mgKOH/g; in addition, CA-1 was a resin not containing any one of the repeating units represented by Formulae (1-1) to (1-5))

CA-2: DISPERBYK-193 (manufactured by BKY Additives & Instruments, nonionic polymer dispersant; in addition, CA-2 was a resin not containing any one of the repeating units represented by Formulae (1-1) to (1-5))

[Solvent (organic solvent)]

S-1: propylene glycol monomethyl ether acetate

S-2: propylene glycol monomethyl ether

S-3: cyclohexanone

S-4: cyclopentanone

<Production of Resin Composition>

In each of Examples and Comparative Examples, raw materials shown in the tables below were mixed to prepare a coloring resin composition or a comparative composition. The unit of the numerical value in the column of the amount added described in the tables below is parts by mass. The description in the column of “Coloring material concentration (%) in solid content” indicates a content (mass %) of the coloring material with respect to the total solid content of the composition. In addition, the description in the column of “Proportion of total amount of specific repeating unit” indicates a proportion (mol %) of the total amount of repeating units represented by any one of Formula (1-1), . . . , or Formula (1-5) with respect to the total molar amount of all repeating units included in all resin components included in the composition.

TABLE 14 Pigment Proportion of dispersion Polymerizable Photopolymerization Coloring total liquid Resin compound initiator Solvent material amount of Part Part Part Part Part concentration specific by by by by by (%) in solid repeating Type mass Type mass Type mass Type mass Type mass content unit Example 1 Dispersion 54.6 A-1 12.0 D-1 5 E-1 5.0 S-1 23.4 34.4 94.6 liquid R1 2 Dispersion 56.4 A-2 4.0 D-1 4 E-1 3.0 S-1 32.6 47.5 93.1 liquid R1 3 Dispersion 54.6 A-3 2.0 D-1 3 E-2 1.0 S-3 39.4 56.3 83.7 liquid R1 4 Dispersion 53.4 A-4 8.0 D-1 3 E-1 3.0 S-3 32.6 45.3 73.3 liquid R2 5 Dispersion 58.6 A-5 8.0 D-2 3 E-2 3.0 S-3 27.4 46.9 97.0 liquid R2 6 Dispersion 55.0 A-6 8.0 D-1 3 E-3 3.0 S-3 31.0 45.8 96.9 liquid R2 7 Dispersion 55.9 A-7 10.0 D-1 5 E-1 3.0 S-3 26.1 38.2 78.5 liquid R3 8 Dispersion 57.2 A-8 10.0 D-2 5 E-2 3.0 S-3 24.8 38.6 97.5 liquid R3 9 Dispersion 63.7 A-9 10.0 D-3 4 E-3 3.0 S-1 19.3 41.4 98.9 liquid R3 10 Dispersion 56.9 A-10 12.0 D-1 4 E-3 3.0 S-3 24.1 39.6 64.3 liquid R4 11 Dispersion 55.0 A-38 5.0 D-1 4 E-2 3.0 S-1 33.0 44.3 91.4 liquid R5 12 Dispersion 55.0 A-38 5.0 D-2 3 E-2 3.0 S-1 34.0 44.0 93.2 liquid R6 13 Dispersion 55.0 A-39 5.0 D-1 3 E-3 3.0 S-1 34.0 39.2 99.1 liquid R7 14 Dispersion 55.0 A-39 5.0 D-2 2 E-3 3.0 S-1 35.0 43.2 96.0 liquid R8 15 Dispersion 52.5 A-11 8.0 D-1 5 E-1 2.0 S-3 32.5 40.9 87.9 liquid B1 16 Dispersion 52.0 A-12 8.0 D-2 5 E-1 3.0 S-3 32.0 39.5 76.5 liquid B1 17 Dispersion 57.9 A-13 8.0 D-3 5 E-1 3.0 S-3 26.2 41.4 90.9 liquid B1 18 Dispersion 52.3 A-8 8.0 D-1 5 E-2 3.0 S-3 31.7 39.6 94.3 liquid B2 19 Dispersion 56.7 A-9 8.0 D-2 2 E-2 2.0 S-3 31.3 46.0 97.7 liquid B2 20 Dispersion 55.1 A-38 8.0 D-3 5 E-2 3.0 S-1 28.9 40.5 92.6 liquid B2 21 Dispersion 58.0 A-39 10.0 D-1 5 E-3 3.0 S-1 24.0 40.3 100.0 liquid B3 22 Dispersion 53.8 A-8 10.0 D-1 2 E-3 3.0 S-1 31.2 42.2 100.0 liquid B3 23 Dispersion 54.1 A-9 10.0 D-2 5 E-3 3.0 S-1 27.9 39.0 100.0 liquid B3 24 Dispersion 59.2 A-10 10.0 D-1 5 E-1 3.0 S-3 22.9 40.6 96.8 liquid B4 25 Dispersion 56.4 A-11 8.0 D-1 5 E-2 2.0 S-3 28.6 43.1 89.9 liquid B4 26 Dispersion 56.8 A-9 8.0 D-2 2 E-3 3.0 S-3 30.2 45.8 76.7 liquid B4 27 Dispersion 63.7 A-9 9.0 D-1 5 E-1 3.0 S-3 19.3 39.9 62.7 liquid B5 28 Dispersion 70.2 A-9 10.0 D-1 5 E-2 3.0 S-3 11.8 40.6 62.9 liquid B5 29 Dispersion 55.0 A-39 5.0 D-1 5 E-3 2.0 S-1 33.0 36.3 96.4 liquid G1 30 Dispersion 55.0 A-39 5.0 D-1 5 E-3 3.0 S-1 32.0 34.0 98.2 liquid G2 31 Dispersion 55.0 A-39 5.0 D-2 5 E-3 3.0 S-1 32.0 35.3 99.3 liquid G3 32 Dispersion 55.0 A-39 5.0 D-2 5 E-3 3.0 S-1 32.0 36.0 96.2 liquid G4 33 Dispersion 55.0 A-39 5.0 D-3 2 E-3 2.0 S-1 36.0 43.3 96.8 liquid Y1 34 Dispersion 55.0 A-40 5.0 D-3 5 E-3 3.0 S-1 32.0 36.0 85.0 liquid Y2 35 Dispersion 53.8 A-38 8.0 D-1 2 E-3 1.0 S-1 35.2 53.7 92.4 liquid I1 36 Dispersion 56.6 A-39 8.0 D-1 5 E-1 3.0 S-1 27.5 46.8 97.3 liquid I1 37 Dispersion 59.8 A-40 8.0 D-1 5 E-2 3.0 S-1 24.2 48.0 85.0 liquid I1 38 Dispersion 60.3 A-17 8.0 D-1 2 E-3 1.0 S-3 28.7 56.0 98.5 liquid I2 39 Dispersion 57.1 A-18 8.0 D-2 5 E-1 2.0 S-3 27.9 48.4 98.4 liquid I2 40 Dispersion 56.3 A-19 12.0 D-1 10 E-2 5.0 S-3 16.7 35.5 99.1 liquid I3

TABLE 15 Pigment Proportion of dispersion Polymerizable Photopolymerization Coloring total liquid Resin compound initiator Solvent material amount of Part Part Part Part Part concentration specific by by by by by (%) in solid repeating Type mass Type mass Type mass Type mass Type mass content unit Example 41 Dispersion 55.9 A-20 8.0 D-2 5 E-3 5.0 S-3 26.1 44.1 86.8 liquid I3 42 Dispersion 54.1 A-21 8.0 D-1 2 E-1 3.0 S-3 32.9 52.5 73.1 liquid I4 43 Dispersion 55.9 A-22 8.0 D-1 2 E-2 3.0 S-3 31.1 53.2 71.3 liquid I5 44 Dispersion 60.6 A-23 8.0 D-1 5 E-3 3.0 S-3 23.4 50.5 77.6 liquid I5 45 Dispersion 55.8 A-24 8.0 D-1 5 E-3 3.0 S-3 28.2 48.7 79.1 liquid I5 46 Dispersion 55.0 A-9 8.0 D-1 5 E-3 3.0 S-3 29.0 48.4 76.4 liquid I6 47 Dispersion 55.0 A-38 5.0 D-1 2 E-2 3.0 S-1 35.0 39.8 91.4 liquid Bk1 48 Dispersion 55.0 A-38 5.0 D-1 2 E-2 3.0 S-1 35.0 39.0 93.2 liquid Bk2 49 Dispersion 55.0 A-39 5.0 D-1 2 E-3 3.0 S-1 35.0 39.5 99.1 liquid Bk3 50 Dispersion 55.0 A-39 5.0 D-1 2 E-3 3.0 S-1 35.0 43.1 95.9 liquid Bk4 51 Dispersion 27.6 A-38 10.0 D-1 11.5 E-2 5.0 S-1 31.5 31.4 92.1 liquid R1 Dispersion 27.6 liquid B2 52 Dispersion 18.3 A-38 5.0 D-1 5 E-2 3.0 S-1 45.0 38.0 93.4 liquid R5 Dispersion 18.3 liquid G1 Dispersion 18.3 liquid Y1 53 Dispersion 18.3 A-38 5.0 D-2 5 E-2 3.0 S-1 45.0 40.2 94.3 liquid R6 Dispersion 18.3 liquid G2 Dispersion 18.3 liquid B1 54 Dispersion 18.3 A-39 5.0 D-3 5 E-3 3.0 S-1 45.0 40.7 99.3 liquid R6 Dispersion 18.3 liquid B2 Dispersion 18.3 liquid Y2 55 Dispersion 55.0 A-39 5.0 D-1 2 E-2 3.0 S-1 35.0 40.1 100.0 liquid Bk5 56 Dispersion 55.0 A-39 5.0 D-1 2 E-2 3.0 S-1 35.0 39.7 100.0 liquid Bk6 57 Dispersion 55.0 A-39 5.0 D-1 2 E-2 3.0 S-1 35.0 41.5 100.0 liquid Bk7 Comparative 1 Dispersion 40.2 CA-3 8.0 D-1 11.5 E-3 5.0 S-1 35.3 32.5 16.3 example liquid I6 2 Dispersion 43.6 CA-4 8.0 D-1 11.5 E-3 5.0 S-3 31.9 34.2 32.1 liquid I6

Among the raw materials listed in the above tables, details of the raw materials shown by abbreviations are as follows.

[Dispersion Liquid]

Dispersion liquids R1 to R8, B1 to B5, G1 to G4, Y1 and Y2, Il to 16, and Bk1 to Bk7: dispersion liquids described above

[Resin]

A-1 to A-40: resins synthesized as in Synthesis Examples described above

CA-3: resin represented by the following formula; numerical values added to the main chain represent molar ratio; in addition, CA-3 is a resin in which the proportion of the total amount of repeating units represented by any one of Formula (1-1), . . . , or Formula (1-5) described above with respect to the total molar amount of all repeating units included in the resin is 20 mol %.

CA-4: resin represented by the following formula; numerical values added to the main chain represent molar ratio; in addition, CA-4 is a resin in which the proportion of the total amount of repeating units represented by any one of Formula (1-1), . . . , or Formula (1-5) described above with respect to the total molar amount of all repeating units included in the resin is 40 mol %.

[Polymerizable Compound]

D-1: KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.)

D-2: NK ESTER A-DPH-12E (manufactured by Shin-Nakamura Chemical Co., Ltd.)

D-3: ARONIX M-510 (manufactured by TOAGOSEI CO., LTD.)

[Photopolymerization Initiator]

E-1: IRGACURE 379 (aminoacetophenone-based photo-radical initiator (manufactured by BASF))

E-2: IRGACURE OXE01 (oxime ester-based photo-radical initiator (manufactured by BASF))

E-3: IRGACURE OXE03 (oxime ester-based photo-radical initiator (manufactured by BASF))

[Solvent (organic solvent)]

S-1: propylene glycol monomethyl ether acetate

S-3: cyclohexanone

<Evaluation>

[Evaluation of Exposure Sensitivity]

In each of Examples and Comparative Examples, on a silicon wafer, the coloring resin composition or the comparative composition was applied to a glass substrate by spin coating, and dried (pre-baked) at 100° C. for 120 seconds using a hot plate. Thereafter, the composition was heated (post-baked) at 200° C. for 30 minutes using an oven to form a resin composition layer having a thickness of 0.60 μm.

Next, using an i-ray stepper exposure device FPA-3000 i5+ (manufactured by Canon Inc.), the resin composition layer was irradiated with light having a wavelength of 365 nm through a mask pattern in which square non-masked pixels with a side of 1.0 μm were arranged in an area of 4 mm×3 mm to perform exposure thereon with a specific exposure amount.

Next, the silicon wafer on which the resin composition layer after the exposure was formed was placed on a horizontal rotary table of a spin-shower developing machine (DW-30 Type, manufactured by Chemitronics Co., Ltd.), and subjected to a puddle development at 23° C. for 60 seconds using a developer (CD-2000, manufactured by Fujifilm Electronic Materials Co., Ltd.). Next, while rotating the silicon wafer at a rotation speed of 50 rpm, the silicon wafer was rinsed by supplying pure water from above the center of rotation in shower-like from an ejection nozzle, and then spray-dried to form a pattern (pixel).

While changing the above-described specific exposure amount, the obtained pattern was observed, the minimum exposure amount for resolving the square pattern with a side of 1.0 μm was determined, and evaluation was performed according to the following evaluation standard. The evaluation results are shown in Table 16. It can be said that, as the minimum exposure amount is smaller, the composition has more excellent exposure sensitivity.

—Evaluation Standard—

A: minimum exposure amount was less than 100 mJ/cm².

B: minimum exposure amount was 100 or more and less than 200 mJ/cm².

C: minimum exposure amount was 200 or more and less than 500 mJ/cm².

D: minimum exposure amount was 500 or more and less than 1,000 mJ/cm².

E: minimum exposure amount was 1,000 mJ/cm² or more.

[Evaluation of Dispersion Storage Stability]

In each of Examples and Comparative Examples, the viscosity (mPa·s) of the coloring resin composition or the comparative composition was measured by “RE-85L” manufactured by TOM SANGYO CO., LTD. After the above-described measurement, the coloring resin composition was allowed to stand at 45° C. under the conditions of light shielding for 3 days, and the viscosity (mPa·s) was measured again. Storage stability was evaluated according to the following evaluation standard from a viscosity difference (ΔVis) before and after leaving to stand. The evaluation results are described in the column of “Dispersion storage stability” in Table 16. It can be said that, as the numerical value of the viscosity difference (ΔVis) is smaller, the storage stability of the composition is better. In each of the above-described viscosity measurements, the temperature and humidity were controlled to 22±5° C. and 60±20% in a laboratory, and the temperature of the composition was adjusted to 25° C.

—Evaluation Standard—

A: ΔVis was 0.5 mPa·s or less.

B: ΔVis was more than 0.5 mPa·s and 1.0 mPa·s or less.

C: ΔVis was more than 1.0 mPa·s and 2.0 mPa·s or less.

D: ΔVis was more than 2.0 mPa·s and 2.5 mPa·s or less.

E: ΔVis was more than 2.5 mPa·s.

[Evaluation of Spectral Change]

In each of Examples and Comparative Examples, on a glass substrate, the coloring resin composition or the comparative composition was applied to a glass substrate by spin coating, and dried (pre-baked) at 100° C. for 120 seconds using a hot plate. Thereafter, the composition was heated (post-baked) at 200° C. for 30 minutes using an oven to produce a film having a thickness of 0.60 μm. Using Cary 5000 UV-Vis-NIR spectrophotometer (manufactured by Agilent Technologies, Inc.), a transmittance Tr1 of the obtained film at a wavelength of 450 nm was measured. Next, the obtained film was heat-treated at 300° C. for 5 hours in a nitrogen atmosphere. A transmittance Tr2 of the film after the heating treatment at a wavelength of 450 nm was measured.

An absolute value ΔT of the difference between Tr1 and Tr2 was calculated, and the spectral change was evaluated according to the following evaluation standard. The evaluation results are described in the column of “Spectral change” in Table 16. It can be said that, as ΔT is smaller, the spectral change is less likely to occur, which is preferable. Both Tr1 and Tr2 were measured in a state in which the temperature and humidity were controlled to 22±5° C. and 60±20% in a laboratory, and the temperature of the substrate was adjusted to 25° C.

—Evaluation Standard—

A: ΔT was 0.1% or less.

B: ΔT was more than 0.1% and 0.5% or less.

C: ΔT was more than 0.5% and 1% or less.

D: ΔT was more than 1% and 5% or less.

E: ΔT was more than 5%.

[Evaluation of Film Contraction Ratio]

In each of Examples and Comparative Examples, on a glass substrate, the coloring resin composition or the comparative composition was applied to a glass substrate by spin coating, and dried (pre-baked) at 100° C. for 120 seconds using a hot plate. Thereafter, the composition was heated (post-baked) at 200° C. for 30 minutes using an oven to produce a film having a thickness of 0.60 μm. The film thickness was measured by scraping a part of the film to expose a surface of the glass substrate, and measuring a step (film thickness of the coating film) between the surface of the glass substrate and the coating film using a stylus type step meter (DektakXT, manufactured by BRUKER). Next, the obtained film was heat-treated at 300° C. for 5 hours in a nitrogen atmosphere. The film thickness of the film after the heating treatment was measured in the same manner as described above, a film contraction ratio was calculated from the following expression, and the film contraction ratio was evaluated according to the following evaluation standard. The evaluation results are described in the column of “Film contraction ratio” in Table 16. Both T0 and T1 below were measured in a state in which the temperature and humidity were controlled to 22±5° C. and 60±20% in a laboratory, and the temperature of the substrate was adjusted to 25° C. It can be said that, as the film contraction ratio is smaller, the film contraction is more suppressed, which is a preferred result.

Film contraction ratio (%)=(1−(T1/T0))×100

T0: thickness of film immediately after production (=0.60 μm)

T1: thickness of film after the heating treatment at 300° C. for 5 hours in a nitrogen atmosphere

—Evaluation Standard—

A: film contraction ratio was 1% or less.

B: film contraction ratio was more than 1% and 5% or less.

C: film contraction ratio was more than 5% and 10% or less.

D: film contraction ratio was more than 10% and 30% or less.

E: film contraction ratio was more than 30%.

[Evaluation of Cracks]

In each of Examples and Comparative Examples, on a glass substrate, the coloring resin composition or the comparative composition was applied to a glass substrate by spin coating, and dried (pre-baked) at 100° C. for 120 seconds using a hot plate. Thereafter, the composition was heated (post-baked) at 200° C. for 30 minutes using an oven to produce a film having a thickness of 0.60 μm.

Next, SiO₂ was laminated at 200 nm on the surface of the obtained film by a sputtering method to form an inorganic film. The obtained film in which the inorganic film was formed on the surface was heat-treated at 300° C. for 5 hours in a nitrogen atmosphere. The surface of the inorganic film after the heating treatment was observed with an optical microscope, the number of cracks per 1 cm² was counted, and the presence or absence of cracks was evaluated according to the following evaluation standard. The evaluation results are described in the column of “Crack” in Table 16.

—Evaluation Standard—

A: number of cracks per 1 cm² was 0.

B: number of cracks per 1 cm² was 1 to 10.

C: number of cracks per 1 cm² was 11 to 50.

D: number of cracks per 1 cm² was 51 to 100.

E: number of cracks per 1 cm² was 101 or more.

TABLE 16 Evaluation result Dispersion Film Exposure storage Spectral contraction sensitivity stability change ratio Cracks Example 1 C A B A A 2 C B B A A 3 B A B B A 4 C A B B A 5 B B B A A 6 A A B A A 7 C A B B A 8 B B A A A 9 A A A A A 10 A B A C B 11 A A A B A 12 A A A B A 13 A A A A A 14 A A A A A 15 C B A B A 16 C A A B B 17 C A B A A 18 A A B A A 19 A A A A A 20 A B A B A 21 A A B A A 22 A A A A A 23 A A A A A 24 C B A A A 25 A A B B A 26 A A B A A 27 C B B C B 28 B A A C B 29 A A A A A 30 A A A A A 31 A A A A A 32 A A A A A 33 A A A A A 34 A A A B B 35 A A B A A 36 C B A A A 37 A A A B A 38 A A B A A 39 C B A A A 40 A A A A A 41 A A B B A 42 C A A C B 43 B A A C B 44 A A B B A 45 A A B B B 46 A B A C B 47 B A A A B 48 B A A A B 49 A A A A A 50 A A A A A 51 B A B A B 52 A A A B A 53 A A A A A 54 A A A A A 55 B B C A A 56 B B C A A 57 B B C A A Comparative 1 B B D E D example 2 C B D E E

In a case of using the coloring resin composition of Examples, the occurrence of cracks were suppressed as compared with a case of using the comparative composition of Comparative Example 1 or 2. Therefore, as compared with the comparative composition of Comparative Example 1 or 2, it can be said that it was possible to expand a process window of process after manufacturing the film.

Example 100: Pattern Formation by Photolithography Method

The coloring resin composition of Example 9 was applied to a silicon wafer by spin coating, and dried (pre-baked) at 100° C. for 120 seconds using a hot plate. Thereafter, the coloring resin composition was heated (post-baked) at 200° C. for 30 minutes using an oven to form a resin composition layer having a thickness of 0.60 μm.

Next, using an i-ray stepper exposure device FPA-3000 i5+(manufactured by Canon Inc.), the resin composition layer was irradiated with light having a wavelength of 365 nm through a mask pattern in which square non-masked pixels with a side of 1.1 μm were arranged in an area of 4 mm×3 mm to perform exposure thereon with an exposure amount of 500 mJ/cm².

Next, the silicon wafer on which the resin composition layer after the exposure was formed was placed on a horizontal rotary table of a spin-shower developing machine (DW-30 Type, manufactured by Chemitronics Co., Ltd.), and subjected to a puddle development at 23° C. for 60 seconds using a developer (CD-2000, manufactured by Fujifilm Electronic Materials Co., Ltd.). Next, while rotating the silicon wafer at a rotation speed of 50 rpm, the silicon wafer was rinsed by supplying pure water from above the center of rotation in shower-like from an ejection nozzle, and then spray-dried to form a pattern (pixel).

The produced patterned silicon wafer was divided into two, and one of these was heat-treated at 300° C. for 5 hours in a nitrogen atmosphere (hereinafter, one is referred to as a substrate before heating treatment at 300° C. and the other is referred to as a substrate after heating treatment at 300° C.). In a case where cross sections of resist patterns on the substrate before heating treatment at 300° C. and the substrate after heating treatment at 300° C. were evaluated by a scanning electron microscope (SEM), the height of the resist pattern formed on the substrate after heating treatment at 300° C. was 71% of the height of the resist pattern formed on the substrate before heating treatment at 300° C. 

What is claimed is:
 1. A coloring resin composition comprising: a resin; a coloring material; and an organic solvent, wherein the resin includes at least one repeating unit selected from the group consisting of repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5), a proportion of a total amount of the repeating units each represented by any one of Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), or Formula (1-5) with respect to a total molar amount of all repeating units included in the resin exceeds 60 mol %, and a content of the coloring material is 30 mass % or more with respect to a total solid content of the composition,

in Formula (1-1), R¹¹, R¹², and R¹³ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, and Ar represents an aromatic group having 5 to 30 ring members, in Formula (1-2), R²¹, R²², and R²³ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, R²⁴ and R²⁵ each independently represent a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms, and R²⁴ and R²⁵ may be bonded to each other to form a ring structure, in Formula (1-3), R³¹, R³², and R³³ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, R³⁴ and R³⁵ each independently represent a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms, and R³⁴ and R³⁵ may be bonded to each other to form a ring structure, in Formula (1-4), R⁴¹ and R⁴² each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, and R⁴³ represents a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms, in Formula (1-5), R⁵¹ to R⁵⁴ each independently represent a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group, and R⁵⁵ represents a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an aromatic hydrocarbon group having 6 to 30 carbon atoms.
 2. The coloring resin composition according to claim 1, wherein a content of a repeating unit derived from a (meth)acrylic acid or (meth)acrylic acid ester compound in the resin is 0 to 20 mol % with respect to the total molar amount of all repeating units included in the resin.
 3. The coloring resin composition according to claim 1, wherein the resin has at least one group selected from the group consisting of a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, and an amino group.
 4. The coloring resin composition according to claim 1, wherein an acid value of the resin is 20 to 150 mgKOH/g.
 5. The coloring resin composition according to claim 1, wherein the resin has an ethylenically unsaturated bond.
 6. The coloring resin composition according to claim 1, wherein a C═C value of the resin is 0.1 to 3 mmol/g.
 7. The coloring resin composition according to claim 1, wherein the resin is a graft polymer or a star polymer.
 8. The coloring resin composition according to claim 1, wherein the resin has a molecular weight of 1,000 to 10,000 and has a molecular chain having no acid group or basic group.
 9. The coloring resin composition according to claim 8, wherein the molecular chain includes at least one selected from the group consisting of a repeating unit derived from a (meth)acrylic acid ester compound, a repeating unit derived from a (meth)acrylamide compound, a repeating unit derived from an aromatic vinyl compound, and a polyester structure.
 10. The coloring resin composition according to claim 1, wherein, as the resin, the following resin 1 and resin 2 are included, resin 1: a resin which is the resin and includes a group having an acid group and an ethylenically unsaturated bond, resin 2: a resin which is the resin, has at least one group selected from the group consisting of a hydroxy group, a carboxy group, a sulfo group, a phosphoric acid group, and an amino group, and has a molecular chain having a molecular weight of 1,000 to 10,000 and having no acid group.
 11. The coloring resin composition according to claim 1, wherein the coloring material includes at least one coloring material selected from the group consisting of a chromatic coloring material and a near-infrared absorbing coloring material.
 12. The coloring resin composition according to claim 1, wherein the coloring material includes a chromatic coloring material and a near-infrared absorbing coloring material.
 13. The coloring resin composition according to claim 1, wherein the coloring material includes a black coloring material.
 14. The coloring resin composition according to claim 1, wherein the coloring material includes at least one coloring material selected from the group consisting of a red coloring material, a yellow coloring material, a blue coloring material, and a violet coloring material.
 15. The coloring resin composition according to claim 1, further comprising: a photopolymerization initiator.
 16. The coloring resin composition according to claim 15, wherein the photopolymerization initiator is an oxime compound.
 17. A film formed of the coloring resin composition according to claim
 1. 18. A color filter comprising: the film according to claim
 17. 19. A solid-state imaging element comprising: the film according to claim
 17. 20. An image display device comprising: the film according to claim
 17. 